🥇 Best Synthetic Motor (Engine) Oil: Buying Guide 2021 - Synthetic engine oil for suv, car, vehicles | Carnes Mechanical (2024)

Which brand of synthetic oil is the best?

Motor oil is critical for getting the longest service life from your car’s engine: It lubricates the engine’s internal parts, minimizes wear, disperses heat, and helps prevent corrosion and sludge buildup. After using various grades of engine oils, we have our own rating of manufacturers of engine oils.

What is engine oil?

Engines must always have sufficient lubrication to prevent premature wear or overheating. These lubricants are clearly marked and have different properties. Here we must distinguish between. Multigrade oils can be used throughout the year.

What is the function of engine oil?

In our engine oil test, we would like to show you what functions this lubricant has. In general, engine oil performs the following tasks:

• Lubrication
• Cooling
• Cleaning
• Corrosion protection
• Sealing

In an engine, many moving metal parts interact with each other. This creates natural friction, which is largely reduced by an oil film. Engine oil prevents these metal parts from jamming and promotes mobility. Oil forms a permanent oil film that has the properties of remaining thin at cooler temperatures and does not break off even at higher temperatures.

As a lubricant, however, engine oil also performs the function of a coolant. A special oil circuit cools the engine oil that has warmed up in the engine, thus providing additional engine cooling. At the same time, dirt particles produced during the operation of the cylinders are flushed out and then remain in the oil filter after passing through the oil pan. For this reason, regular oil changes are particularly important. However, not only should new engine oil be filled in, but a new oil filter should also be installed.

At the same time, however, engine oil also serves as corrosion protection. Metal can corrode due to atmospheric moisture. We also generally speak of rust formation here.

Finally, engine oil also has a sealing function. Compression is established between the cylinder and the cylinder head via the cylinder head rings. These rub involuntarily against the inner wall of the respective cylinder. Without engine oil, intense heat and wear would occur here, leading to engine damage.

For this purpose, the engine oil forms a thin filter between the cylinder wall and the cylinder head ring. This is consequently an additional seal that leads to higher compression.

Advantages & areas of application

Engine oil is primarily found in the automotive sector. Both gasoline and diesel engines require a sufficient amount of engine oil for lubrication. Understandably, less oil is needed in passenger cars than in a truck, for example.

The respective operating manuals for these vehicles list exactly how many liters the respective engines can hold.

Multigrade oils

Multigrade oils usually consist of low-viscosity base oils, so that good winter suitability is ensured. Furthermore, these oils are provided with additional additives. This ensures sufficient viscosity at higher temperatures. These additives are, for example, polymers, polyisobutylene or polyester. They are more like thickeners so that these multigrade oils can be used all year round.

The only problem is that multigrade oils lose their viscosity over a longer period of time. They must therefore be changed at regular intervals. Nevertheless, their shelf life is longer than that of monograde oils.

Advantages of multigrade oils

• high viscosity range
• can be used all year round
• need to be changed less frequently than monograde oils

Disadvantages of multigrade oils

• lose viscosity in the course of service life
• are more expensive

The distinction by type of production

Many people think that motor oil is made exclusively from petroleum. This is not true in all cases. Therefore, we must distinguish the oil according to the method of production.

The original motor oil is also called mineral oil and comes directly from a petroleum refinery in the form of distillation. In addition, there is also semi-synthetic oil, which consists of a mixture of mineral and synthetically obtained base oils. Finally, we must not fail to mention synthetic oil, as this is produced exclusively by synthetic means. Synthetic oils are of very high quality and are mainly used in high-powered vehicles.

If only low mechanical friction and optimum fuel economy are important, then a low-viscosity oil is exactly the right choice. In this case, low-viscosity base oils are combined with high-quality additives so that a high viscosity is always achieved under extreme loads. However, low-friction oils cannot be used with every engine. If you decide to use them, be sure to ask the manufacturer for approval. In most cases, low-viscosity oils have a low-temperature viscosity of 0w or 5w.

Longlife oil

Lately, long-life oils have been the talk of the town. These are also low-viscosity oils, but they require much longer service intervals. As the name suggests, you can drive a vehicle with long life oil much longer without an oil change than when using conventional multigrade oil. The only thing to keep in mind here is that the vehicle and the installed engine are designed exclusively for long life oil. Mixing it with other types of oil can cause damage.

Some of our engine oil comparison test winners are equipped with smooth running and longlife properties. With additional additives, these oils are not only supposed to be particularly gentle on the engine but also produce high fuel savings. Precise tests in this respect could not be carried out here, as fuel consumption differs from model to model and the various engine types.

Nevertheless, synthetic engine oils with smooth-running properties can be said to have a positive effect. If, on the other hand, you rarely want to change your oil, then you should take a closer look at the Longlife products. However, both low-friction and long-life oils can only be used without problems after approval by the vehicle manufacturer.

Read more:
Best synthetic oil for high mileage engine

Best synthetic motor oil comparison

It’s easy to get lost among the many options out there. That’s why our team has compiled a list of the best-trusted products to help you compare the best synthetic engine oils. These are all 100% synthetic oil brands that we have selected for this list, based on their ratings and demand. Here they are in no particular order:

1. Mobil 1 High Mileage 5W-30 Synthetic Oil

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High Mileage Engine Oils: special sealants and additives enable engine oils to provide excellent protection to engines with more than 75,000 miles.

Over miles, all engines get more and more wear on their moving and static parts. One of the most acknowledged truths is to use engine oil with higher viscosity. This remedies the wear to a certain extend. Another good solution for these engines is to try Mobil 1 High Mileage 5W-30 Synthetic Oil which is specially developed for the specific needs of such engines.

Key features: excellent protection for engines with wear; decrease of oil leaks.

This oil has special additives developed to wash harmful deposits and to ensure a high level of protection against wear on the parts of a gasoline engine. This oil is also recommended for engines, which run with a lower quality oil which means that the wear risks are higher here. The oil has also seal additives or conditioners which save the engine from potential oil leaks as it reduces the present leaks. So this synthetic oil is a good solution to prolong the engine’s life and maintain its performance.

This oil has gained a big number of OEM and industry approvals so it is definitely a great choice for both diesel and gasoline engines.

Please read the owner’s manual to your car prior to using this engine oil.

Mobil 1 High Mileage 5W-30 engine oil specification

• API STANDARDS: CF, SL, SM, SN, SN Plus
• ACEA STANDARDS: A1/B1, A5/B5

Pros:

• Ideal for high mileage engines
• Can help prevent oil leaks
• Can extend the life of higher mileage engines

Cons:

• Absent

2. Castrol EDGE Extended Performance 5W-30 Advanced Full Synthetic Motor Oil

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Extended Service Engine Oils: using premium formulas manufacturers were able to extend even more the service intervals like the Castrol EDGE Extended Performance with its 15,000 miles tag. This synthetic oil is best for bigger change intervals. The oil can maintain its lubricating properties up to 15,000 miles.

Key features: good protection against wear including during cold starts; fluid Titanium FST; higher fuel economy; increased oil change intervals.

The main difference between this engine oil and other premium ones – the bigger oil change intervals. To make this possible there is a special additive used: Titanium FST. The engine with hits oil gains on better performance, fuel economy, and high level of protection.

This oil has gained a big number of OEM and industry approvals so it is definitely a great choice for both diesel and gasoline engines.

If a car is under warranty or runs under severe conditions like dusty environment, commercial use, periodic towing, long idle duration, and especially racing – keep to the car manufacturer’s recommendations for oil change intervals.

Castrol EDGE 5W-30 engine oil specification

• API STANDARDS: SN, SM, SL, SJ
• ACEA STANDARDS: A1/B1
• Ford WSS-M2C153-H, WSS-M2C930-A, WSS-M2C945-A, WSS-M2C946-A
• Honda HTO-06
• ILSAC STANDARDS: GF-5, GF-4, GF-3
• Chrysler MS-6395
• WSS-M2C929-A
• GM 4718M, 6094M, dexos1, LL-A-025

Pros:

• Ideal for high mileage engines
• Can help prevent oil leaks
• Can extend the life of higher mileage engines

Cons:

• Absent

3. Castrol GTX MAGNATEC 5W-30

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Multipurpose Engine Oils: the wider category including products like our winner the Castrol GTX Magnatec 5w-30 Synthetic Oil suited for almost any engine in the market. This is one of the best solutions for engines running under heavy conditions in winter. On top of that customers may note the price is quite affordable for every budget.

Key features: high level of protection key engine parts the whole time it’s running; technology of intelligent molecules, which protects the engine in the first minutes of running especially in cold starts; reduced fuel consumption thanks to smooth running and low drag in the oil; reasonable price.

This synthetic oil protects the engine of your car using the “intelligent molecules” – the components which stick to the most critical parts of an engine and remain on the surfaces even when the engine is not running. This additional layer enables enough lubrication for the first minutes after the start when it is vulnerable to enormous wear. This warm-up lasting up to 20 minutes may cause most of the wear in the engine. To prevent that is the reason why the customers choose Castrol GTX Magnatec 5w-30 Synthetic Oil.

This synthetic engine oil is designed for any gasoline engine. It is best for modern direct injection engines with for example Fuel Injection System, Gasoline Direct Injection, Ford EcoBoost, Spark Ignited Direct Injection, and other technologies.

The official specifications and OEM approvals for the oil are listed here.

Please read the owner’s manual to your car prior to using this engine oil.

Castrol EDGE 5W-30 engine oil specification

• API STANDARDS: SN Plus/SN
• GM dexos1® Gen 2
• ILSAC STANDARDS: GF-5
• Ford WSS M2C929-A, WSS M2C946-A

Pros:

• Ideal for high mileage engines
• Can help prevent oil leaks
• Can extend the life of higher mileage engines

Cons:

• Absent

4. Pennzoil Platinum Full Synthetic 5W-30 Motor Oil

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Severe Conditions Engine Oils: frequent stop-start, heavy traffic and other severe driving conditions were the inspiration for creating engine oils like the Pennzoil Ultra Platinum 5W-30 that includes unique compounds to help the engine during harsh conditions.

The oil is specially designed for severe driving conditions. It complies best with the heavy driving conditions, which include heavy loads, dusty or off-road conditions, constant stop-accelerate driving mode, and so on. To prevent your engine from enormous wear under these conditions and to keep the fuel consumption low helps the oil.

Key features: high level of engine protection during severe driving; great fuel economy; excellent cleaning additives.

This oil has gained a big number of OEM and industry approvals so it is definitely a great choice for both diesel and gasoline engines.

Please read the owner’s manual to your car prior to using this engine oil.

Pennzoil Ultra Platinum 5W-30 engine oil specification

• API STANDARDS: SN, SM, SJ
• ACEASTANDARDS: A5/B5-10, A5/B5-12
• Ford WSS-M2C947-A, WSS-M2C930-A, WSS-M2C945-A, WSS-M2C946-A
• Honda HTO-06
• ILSAC STANDARDS: GF-5
• Chrysler MS-6395
• WSS-M2C929-A
• GM 6094M, 4718M, dexos1

Pros:

• Ideal for high mileage engines
• Can help prevent oil leaks
• Can extend the life of higher mileage engines

Cons:

• Absent

5. Valvoline Synpower 0W-20

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Cold Climate Engine Oils: ultra-low viscosity oils like the Valvoline Synpower 0W-20 are intended to be used in regions where extreme cold demands a highly specialized lubricant.

This fully synthetic engine oil is designed first of all for cold climates. It ensures protection under heavy operating conditions along with high-level performance. The oil can be used in diesel, gasoline and LPG engines. it is designed to comply with today’s standards of leading engine manufacturers.

Key features: superior properties at low temperatures; high level of protection; accepted for any types of modern combustion engines; special additives to maintain the engine clean.

The oil is distinguished by its very low viscosity. It shows instant oil flow even under very low temperatures. It is one of the best among oils intended for cold climates. The oil can be used in any type of modern engine – diesel, gasoline, LPG and even hybrid ones. The low viscosity makes smooth engine running even just after a cold start in low-temperature environments. Due to the viscosity features the oil is not recommended to use in hot climates, in high load driving conditions, and in engines with high mileage and thus a high level of wear.

The oil enables an “instant flow” in cold starts which enables immediate smooth running and optimal fuel consumption for these conditions. The oil is formulated with special additives that keep from the formation of varnishes, sludge, and other damaging deposits.

Please read the owner’s manual to your car prior to using this engine oil. The official specifications and OEM approvals for the oil are listed here:

Valvoline Synpower 0W-20 engine oil specification

• API STANDARDS: SN Plus/SN
• GM dexos1® Gen 2
• WSS M2C946-A
• ILSAC STANDARDS: GF-5
• Ford WSS M2C929-A

Pros:

• Ideal for high mileage engines
• Can help prevent oil leaks
• Can extend the life of higher mileage engines

Cons:

• Absent

6. Motul X-cess 5W-40 Synthetic Oil

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High-Performance Engine Oils: Motul X-cess 5W-40 Synthetic Oil, offering ultimate performance to high power cars. This is the best solution for high-performance vehicles.

Key features: top for severe driving conditions; high level of protection against wear; designed for high performance engines.

This oil is specially designed for sophisticated engineered gasoline, LPG and diesel engines with high performance.

Approvals & Specifications

The following are the official specifications and OEM approvals for this oil, please compare this information with your owner’s manual recommendations before buying the product.

Please read the owner’s manual to your car prior to using this engine oil.

• API STANDARDS: SN,
• CFBMW LL-01
• Porsche A40
• Renault RN0710
• GM-Opel LL B-025
• FIAT 9.55535-H2
• ACEA STANDARDS: A3/B4
• MB-Approval 229.5
• Renault RN0700
• VW 502 00 – 505 00
• FIAT 9.55535-M2
• FIAT 9.55535-N2

Pros:

• Ideal for high mileage engines
• Can help prevent oil leaks
• Can extend the life of higher mileage engines

Cons:

• Absent

Best synthetic oil 0w20

7. Castrol EDGE 0W-20 Advanced Full Synthetic Motor Oil

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Castrol® EDGE® is a fully synthetic motor oil that is engineered for drivers who want only the best from their engines. Castrol EDGE with Fluid TITANIUM Technology is the natural choice for drivers who demand maximum performance and protection from their cars. Unlock exhilarating performance with every drive.

Castrol EDGE is Castrol’s most advanced engine oil. It is a premium full synthetic oil that is designed for consumers who demand the best performance from their cars. Castrol EDGE is recommended by leading car manufacturers. Castrol EDGE is engineered with fluid titanium technology that physically changes the way the oil behaves under pressure.

Pros:

• Advanced premium full synthetic motor oil to offer strength under extreme pressure
• Titanium strong for maximum engine performance
• Reduces metal-to-metal contact across a range of different driving speeds
• Protects the engine for the entire drain interval even under extreme pressure
• Decreases engine deposit formation to help maximize engine response
• Best full synthetic money can buy

8. Genuine Honda Parts 08798-9038 5W-20 Blended Synthetic Motor Oil

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Formulated to deliver higher performance and greater fuel economy which extends the life of the engine. They surpass Honda and Acura requirements to further minimize harmful engine deposits and maximize fuel economy. Honda motor oils are tested and approved by Honda R&D. Honda Genuine Synthetic Blend Motor Oil is formulated to provide excellent wear protection, to minimize the formation of sludge and varnish, and to resist viscosity and thermal breakdown even in severe service. It also protects against rust and bearing corrosion and has good foam resistance. The part-synthetic formulation provides enhanced oxidation resistance and thermal stability at high temperatures and better pumpability at low temperatures compared with conventional engine oils, for extra protection under all driving conditions.

Pros:

• Provides protection from corrosion and reduces engine wear
• Fights formation of sludge and other engine deposits
• Excellent engine protection under a wide range of operating conditions and temperature extremes
• Eases cold starting during extreme weather conditions

9. Liquimoly 0W-20 Special Tec AA Motor Oil

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Special Tec AA oils cover a broad spectrum. Motor oil isn‘t just motor oil. Modern engines have higher demands of the oil – and these vary from engine to engine. LIQUI MOLY has developed the Special Tec AA oils just for Asian and American models. They are precisely attuned to these engines. These are tailor-made lubricants and are Made in Germany. In total, there are five LIQUI MOLY Special Tec AA oils in viscosities of 10W-30, 5W-40, 5W-30, 5W-20 and 0W-20. They allow increased oil change intervals and are ideal for models by Chrysler, Daihatsu, Ford, General Motors, Honda, Hyundai, Kia, Isuzu, Mazda, Mitsubishi, Nissan, Subaru, Suzuki, and Toyota. They are not classified by the European ACEA standards, but by API and ILSAC.

Pros:

• Ideal for modern Japanese and American gasoline engines.
• Particularly suitable in case of long oil change intervals and high motor requirements.

10. Idemitsu Full Synthetic 0W-20 Engine Oil SN/GF-5

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Idemitsu Full Synthetic 0W-20 Engine Oil SN/GF-5 maximizes fuel economy by combining synthetic base oils with advanced friction modifying additive technologies. It provides outstanding protection against engine wear while minimizing the formation of deposits, even under extreme conditions. Engineered for high piston cleanliness which means less oil burn-off and reduced emissions. Refer to your vehicle owner’s manual to ensure you purchase the correct oil for your vehicle.

Pros:

• Exceptional wear protection and fuel economy
• Maximizes torque and horsepower
• Extended protection with energy savings
• Reduces emissions
• Extends drain intervals
• Extreme climate performance delivers excellent low-temperature fluidity
• Protects against the accumulation of sludge and varnish
• Available in both 1-quart and 5-quart containers

11. Toyota Genuine Synthetic SAE 0W-20

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Keep your vehicle running smoothly and efficiently by using this Toyota Genuine Synthetic SAE 0W-20 motor oil. It is specially formulated for use in Toyota vehicles. The lower viscosity of this Toyota genuine motor oil pumps better in cold temperatures, and it delivers quality lubrication while helping to minimize friction better than standard oils. It also provides better fuel economy and thermal stability.

Pros:

• Specifically designed for use in Toyota vehicles
• High-quality uniform lubrication
• Toyota motor oil helps to minimize friction
• Boosts fuel economy and thermal stability
• Reduces frequency of oil changes

12. Motul 8100 ECO-LITE 0W20

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“Fuel economy” engine oil specially designed for recent cars, powered with gasoline engines, designed to use oil with low friction, very low HTHS viscosity (= 2.60 mPa.s) and “Mid SAPS” reduced content of sulphated ash, phosphorus (0.06 = x = 0.08%) and sulphur (= 0.5%). Catalytic converter is friendly.Back compatibility of new API SM standard over API SL requirements and former API standards. These oils may be unsuitable for use in some engines. Refer to the owner manual or handbook if in doubt.

Pros:

• Provides outstanding oxidation resistance
• Better anti deposits protection
• Better engine cleanliness
• Anti-wear protection
• Enhanced performance at cold temperature during all oil life span
• 0W-20 grade minimize oil hydrodynamic friction, allows fuel economy especially when oil is cold
• Improves oil flow at start-up, faster oil pressure build-up, faster rev raisings and reach operating temperature faster
• Environment-friendly, those oils allow fuel consumption reduction and then minimize greenhouse gases emissions

13. Valvoline Full Synthetic High Mileage SAE 0W-20 Motor Oil

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From the first use, Valvoline Full Synthetic High Mileage with MaxLife Technology SAE 0W-20 Motor Oil provides your car’s engine with maximum protection against heat, deposits, and wear. Formulated with anti-wear additives that stay in your oil longer, FSwMT supplies 40-percent more anti-wear film than Mobil 1* and is specially formulated to meet the needs of vehicles as they age past 75,000 miles. This advanced formula can also be used in newer cars to help prevent engine breakdown. Trust Valvoline Full Synthetic High Mileage with MaxLife Technology SAE 0W-20 Motor Oil to protect your engine.

Pros:

• 40% more anti-wear film than Mobil 1
• Increased antioxidants and agents to reduce oil breakdown and help prevent sludge, deposit formation, and premature engine wear
• Friction-reducing additives to enhance fuel efficiency and horsepower
• Shear stable viscosity modifiers to prevent viscosity break down
• With added technology for engines over 75,000 miles
• Advanced formulation

14. Pennzoil Ultra Platinum Full Synthetic 0W-20 Motor Oil

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Pennzoil Ultra Platinum Full Synthetic motor oil is made from natural gas, not crude. It is one of the best full synthetic motor oils in our portfolio. Made for extreme performance, Pennzoil Ultra Platinum outperforms conventional oils in terms of low-temperature performance and volatility control. Our full synthetic motor oils are made from natural gas, not crude. It is uniquely engineered from our revolutionary PurePlus Technology which is a patented process that converts pure natural gas into a high-quality, full synthetic base oil. Because it is made from natural gas, the high-quality base oil is 99.5% pure contains fewer impurities than base oils made from crude oil, and when combined with our advanced additive technology creates one of the best formulations in our Pennzoil portfolio. Pennzoil Ultra Platinum far exceeds the most stringent car manufacturer requirements for cleanliness and protection (based on ILSAC GF-5, dexos1, and Ferrari approvals), and is suitable for all car, SUV, light van, truck gasoline, and turbocharged engines; under all driving conditions.

Pros:

• Pennzoil is the first motor oil made from natural gas, not crude
• Delivers unsurpassed sludge protection to help keep high performance and luxury car engines as close as possible to factory clean
• Provides oil stability and endurance under extreme conditions (heat, load, and speed) for protection against viscosity loss and thermal breakdown
• Formulated to deliver faster low-temperature oil flow and protection in extreme heat
• Keeps pistons dramatically cleaner than required by the toughest industry standards

Best synthetic engine oilreview

Car owners know the advantages of a well-oiled engine. It can extend the life of your car’s engine and add miles to your adventures. With the best synthetic oil, you can save a few hundred dollars that you could have spent in a garage.

So you’re likely to get the most out of your car’s engine if you use the right synthetic oil. Synthetic oil is considered the most expensive and best oil you can use in your car. However, given the many brands that make these oils, it can be difficult to find the best. However, we are here to dispel any doubt or suspicion. We have created a comprehensive guide to finding the best synthetic engine oil.

Best synthetic motor oil for cars

Did you know that switching to synthetic engine oil can extend the life of your engine? Not only that but by choosing the best synthetic oil you can increase fuel consumption, extend the time between oil changes, and more.
If you’ve made it to our review among the many synthetic engine oil reviews out there, then you’re probably considering switching. The problem is to find the best option out there that offers you the best for your money. Not only that, but it is also crucial to find the ideal engine oil for your specific vehicle, driving conditions, and overall use.
Don’t worry, we will guide you through the best options, the way to choose the ideal solution, and present you with all the facts.

Changing the oil of your car is one of the most common reasons to take your vehicle into service these days. It also happens to be one of the few remaining things, other than using fuel injector cleaners, that car owners can safely and effectively do themselves in order to maintain their car.When it comes to oil, there are two major types – conventional and synthetic. The former is made from crude natural oil, while the latter is also fortified with numerous synthetic compounds and often refined further. These days, synthetic oil is quickly becoming the norm, as it lasts longer and usually does the job significantly better, especially in extreme temperatures.

Remember that your engine is the heart of your vehicle and you definitely want it to last as much as possible. Going for the best synthetic oils is one of the best ways to take care of your engine and keep it from gearing.But while synthetic motor oils provide the best engine protection, not all of them are in the same formulation. In the industry of engine oils, there will always be one that outperforms the other. So we went on a hunt for those best synthetic motor oils out in the market today. Based on the opinions and expertise of many engine oil users, here are your excellent options for the best synthetic motor oils.

The best engine oil for Honda Accord, the best engine oil for Toyota Camry, the best engine oil for Toyota Corolla.

Synthetic Oil synthetic blended

Modern cars are manufactured for using specific lubricants. The features of oil are very important for the safe and smooth running of an engine. The oil change intervals are always to be kept, the engine oil should be checked and changed regularly. These intervals are stated in the recommendations of original equipment manufacturers (OEM). You may consider the model of your vehicle, its technical condition and the way you drive it. Here are some of the most common oils with short descriptions on the market.

Here are some of the most important additives you’ll find in synthetic oils, but remember that you won’t find them all together in one oil:

• Defoamer. This helps to prevent synthetic oil from foaming.
• Antioxidants extend the life of the oil by slowing down the oxidation.
• Cleaning agent to prevent deposits and dirt accumulation and to clean an engine.
• Wear a protection agent to extend the life of an engine.
• Dispersion agent for preventing sludge accumulation and clumping of particles
• Corrosion inhibitors to protect your vehicle engine from corrosion

Consider these factors when buying synthetic oil, and you will get the best oil for your car. Let’s take a closer look at the two types of synthetic oil

Which engine oil should you use?

Ideally, your synthetic engine oil should withstand this temperature. If you follow the above table, a 0W20 would be close to the limit (10°C). This is exactly the kind of situation you need to avoid. A better option in this scenario is a synthetic 5W30 engine oil.

Which engine oil should you use in summer?

Let’s say the average ambient temperature in summer is 28°C. The 5W30 engine oil would be in a similar situation to the 0W20 in winter. A slightly degraded oil may not retain its properties if it is closer to its operating limit. The solution would be to use a 5W40 in summer.

For this hypothetical example, a 5W40 would even be the ideal engine oil for all seasons. Remember that other considerations may also be relevant. If a synthetic SAE 5W30 API SN Plus engine oil is specified in your manual, you can be sure that it can be used at temperatures above 30°C and thus closer to the 35-38°C limit.

As you can see, in addition to the SAE viscosity class, there are other important engine oil specifications that you should consider.

1. API Service Classification
The American Petroleum Institute (API) is responsible for certification when oil meets certain OEM quality and performance standards. Over time, the conditions for obtaining certification may change due to higher OEM quality requirements.

The latest API Oil Certification (SN PLUS) was approved on November 9, 2017. API SN Plus certification goes beyond all previous classifications, i.e. any engine oil that has API SN Plus certification can be used on older vehicles. The opposite is not the case. If your user manual recommends an API SN Plus engine oil, do not use a lower oil such as API SJ or SM.

2. ACEA Classification
The Association des Constructeurs Européens d’Automobiles (ACEA) is the European hom*olog of the American API service classification. The A/B class is used for passenger car engine oils accompanied by a number representing the category. The higher the number, the lower the oil viscosity and the longer the maintenance intervals.

3. Manufacturer specific certifications
In some cases, you will find additional certifications in the product description, e.g. GM dexos1. In addition to industry standards, vehicle manufacturers have developed their own engine oil specifications. This is another reason to read the manual and check the exact engine oil for your engine.

Various types of synthetic oil

There are two types of synthetic oil: fully synthetic oil and synthetic blend. Since the introduction of both products in the 1960s, there has been a debate between people who prefer fully synthetic oils to synthetic oils and vice versa. We are here to shed more light on these two to help you choose the best for your engine.

• Full synthetic oil

For many, this is considered to be the most superior of the two oils. They are designed for high-tech automotive engines and typically provide long-lasting performance in terms of deposit protection and viscosity index. These types of oil are more popular and newer car models are designed to accommodate these.

On the other hand, however, they are very expensive and cannot be used for older car models as not all car engines can accommodate full synthetic oils. You can read your car’s owner’s manual to find out if it can hold this oil.

• Synthetic blend oil

This is a mixture of natural oil (standard engine oil) and synthetic oil. This type of oil is less volatile, reduces oil loss and evaporates less. Blending with standard engine oil makes it a cheaper option and is therefore a popular choice for people with SUVs and pickups. However, they are not fully regulated as there are no established standards for the concentration of synthetic elements and minerals in synthetic blends. Therefore, when choosing synthetic blends, be sure to choose a brand that matches the performance of your vehicle.

Full Synthetic VS Synthetic Blend

This is a critical question for many. Sometimes a mixture can be all you need, but if you’re willing to spend a little more on fully synthetic engine oil, it’s worth it. The main thing to remember is that even if you choose the cheaper synthetic blend than fully synthetic oil, it is still a better choice than conventional engine oil.

You may have noticed that synthetic engine oil has become a requirement for most new vehicles today. This is mainly because manufacturers today are able to build cars with tighter tolerances than they did years ago with conventional oil.

The main difference is that a synthetic blend combines synthetic stocks with conventional engine oil, so you don’t get a pure base. With fully synthetic oil, you get a refined synthetic base in combination with the coveted additives. There are fewer impurities, and you can expect it to last longer than conventional oil and a synthetic blended oil before you need to change the oil.

Advantages of synthetic oil

• It’s a cheaper option in the long run.

When using standard engine oil, you must change it after 3000 miles, while synthetic oil can last up to 7,000 miles. The cost may be high, but you’ll find it’s cheaper in the long run because you don’t have to change it from time to time.

It’s better for your car engine.

Besides its economic advantage, synthetic oil is better for your engine than standard oil. For example, it can give your car better lubrication and this can maximize the performance of your engine, extend its life and improve mileage. Synthetic oil keeps your engine running reliably even in cold weather.

• Resistance to external influences

Another major advantage of synthetic oil is its resistance to various external elements such as thermal degradation, oxidation, and oil sludge. It also reduces evaporation loss, which is one of the main reasons for its long life.

We hope that these benefits will help convince you to switch from standard engine oil to synthetic engine oil.

Quick synthetic engine oil FAQ

There are always questions if you want to do something different with your vehicle. Often we ask ourselves the question of whether it is worth it. There is still concern about whether this could also harm our valuable car. So let’s take a look at some of the most common questions we’ve found about synthetic engine oil.

I have not used synthetic engine oil and would like to change. Will it damage my vehicle?

Answer: This is a common question because there are many myths about switching to synthetic engine oil. One of the reasons for this is that conventional engine oil tends to clog your engine so much that it blocks possible leaks that may have opened over time. If you switch to synthetic engine oil, the powerful detergents can remove these blockages and open the leaks. Note that these leaks should not be present at all and must be repaired. You may want to contact your trusted mechanic to see if a synthetic mix might be a more suitable option.

I have read somewhere that it is not recommended to use synthetic engine oil for a new engine. Is that true?

Answer: Although it is best to run the engine in before switching to synthetic engine oil, you may want to check your manual again. More and more car manufacturers are building vehicles that use synthetic oil because of its many advantages.

Can I use a synthetic oil evening if my car doesn’t have a high-performance engine?

Answer: Another common misconception is that synthetic oils are only intended for high performance engines. This is anything but the truth. Perhaps this was the case a long time ago. But today it is the oil of choice for anyone who really appreciates their car and wants their engine to perform at full power. Just make sure you buy the right viscosity thickness to meet your car’s needs.

Can I use conventional oil?

Answer: Many people are worried that they are sticking to the expensive alternative, regardless of its many benefits. Fortunately, if at any point you feel you can’t afford a synthetic oil or want to switch back, that’s no problem.

Can synthetic and conventional oils be blended?

Answer: Yes, many people do this for different reasons. Just make sure that both oils are suitable for mixing.
These are just some of the many questions people have about synthetic oils. If you feel that we have not answered your question here, we would be happy to hear from you and do our best to help you.

Follow-up

The decision to switch to the best synthetic oil is simple; the question is to find the right one. Unfortunately, with its great popularity over the years, more products below the expected quality have flooded the market. Finding the ideal oil can be difficult.

We hope our reviews of synthetic engine oils have helped you move in the right direction. The most important thing to remember is to read your vehicle’s manual carefully and always check the bottle of engine oil to make sure it fits perfectly with your engine’s requirements.

Fully Synthetic, Semi-Synthetic or Mineral Engine Oil?

Semi-synthetic oils are cheaper than fully synthetic as they are a mixture of synthetic and mineral oil. Engines requiring semi-synthetic oil must use at least semisynthetic oil (not mineral oil) but may benefit from upgrading to fully synthetic oil for increased protection and performance.

Best Synthetic Motor Oil

Conventional motor oil definitely serves its purpose, but synthetic improves on just about every aspect of conventional. Let’s look at why this is so, and how synthetic oil exactly works so you know how to choose the best option for your vehicle. Synthetic lubricants are artificially-made oils that are usually used as an alternative to conventional oils.

In short terms, they are used as a substitute for the most common lubricants refined from petroleum. Generally speaking, they provide superior mechanical and chemical properties as opposed to conventional mineral lubricants. Most car enthusiasts recommend them as they provide a huge range of benefits, especially if the car is driven in extreme conditions or is a performance vehicle.