The best additives in motor oil for the engine: rating 2026

The engine additive is essential, much like motor oil itself. However, it is crucial to identify the specific qualities that an additive should possess in order to offer optimal protection and prolong the engine’s lifespan. This article and the 2026 ratings will provide detailed answers to these inquiries.

Engine oil additives exhibit numerous advantageous properties, tailored to their intended purpose and specialization. These additives can impede oxidative processes, counteract harsh environmental factors, and enhance and supplement the lubricant’s performance attributes.

Detergent, anti-wear, and viscosity-thickening additives are just a few examples. By incorporating an additive, the lubricant’s longevity is extended, leading to a lengthened engine lifespan, minimized driving noise, and reduced fuel consumption.

Original article content:

1. How to choose a good oil additive for the engine?
2. What firm of additives is better to choose
3. Summary table-rating of the top 8 best engine oil additives 2026
4. Ranking and review of the top 8 best additives

Rephrased article content:

1. Tips for selecting a high-quality engine oil additive
2. Which brand of additives is the best choice?
3. Comparison table with ratings of the top 8 engine oil additives in 2026
4. Review and ranking of the top 8 additives available

How to choose an engine oil additive?

When car owners choose an oil additive for their engine, they take several factors into consideration. These factors include the purpose of the additive, the type of fuel used (diesel or gasoline), and the compatibility of the additive with the engine oil already in use.

Another important aspect to consider is the composition and properties of the additive itself.

Now let’s delve into each of these points:

• Purpose of the additive: Additives can be classified into different types depending on their purpose. These types include depressors, anti-detonation agents, dispersing agents, thickeners, inhibitors, and additives with antifriction coatings. Depressor additives are used in combination with engine oil during the winter to reduce fuel viscosity and lower the pour point. Anti-detonation additives are designed to eliminate peroxides and prevent engine detonation. Dispersing agents prevent the formation of soot and other deposits on vital engine components. They also neutralize acids, prevent wax deposits, and extend the life of the oil. Thickeners make the lubricant more viscous, improving its performance by preventing it from penetrating the combustion chamber. Inhibitors protect the engine from oxidation and corrosion on metal parts. Antifriction additives are recommended for high-mileage engines as they help reduce mechanical wear, minimize toxic exhaust emissions, and make the driving process quieter.

The first type of additive helps prevent corrosion of metal engine components by removing water from the gas tank. Sealants indirectly address minor damages like oil leaks. Detergent additives effectively clean decomposition products. Thickeners, like sealants, make the oil more viscous.

• It is essential to consult a specialist to ensure compatibility between the additive and the engine oil. When visiting a car dealership, it is crucial to provide information on the type of engine, the brand of oil being used (mineral, synthetic, semi-synthetic), any existing issues, and the purpose of purchasing an engine additive. It can be challenging, particularly for those new to driving, to select a suitable product without professional guidance.

Therefore, determining the engine type, the specific oil utilized, and the specific issue that needs to be addressed (e.g., extreme engine wear, excess noise, indications of corrosion, etc.), it should be relatively simple to choose the appropriate additive.

Which additive firm is better to choose – an overview of manufacturers’ companies

The following companies manufacture top-notch and dependable engine additives:

• LIQUI MOLY is a renowned global brand known for manufacturing lubricants and additives. Their products are designed to significantly reduce engine friction (up to 50% on average), minimize noise levels, and enhance fuel efficiency. The company is based in Germany.
• The SUPROTEK Group of Companies is a leading Russian scientific and production holding that specializes in various innovative automotive chemistry solutions. Their brand of additives creates optimal conditions for engine operation and restoration, thus extending its lifespan. These additives also reduce noise and ensure reliable car starting in any weather conditions. SUPROTEK has been an established player in the domestic auto chemical market since 2002.
• Lubrizol is a well-established American company that has been a reputable presence in the automobile market since the 1930s. Lubrizol additives offer numerous benefits, including fuel efficiency improvement, noise reduction, and extended engine lifespan.

Automobile enthusiasts place great trust in Lubrizol and are generally pleased with the exceptional quality of their engine additives.

Ranking of the top 8 best engine oil additives

TOP-8 best engine oil additives in terms of price-quality ratio

For 2026, we have compiled a list of the top engine oil additives that offer an excellent price-to-quality ratio.

These additives boast impressive performance properties, effectively reduce noise while driving, and significantly prolong the engine’s lifespan.

8. LIQUI MOLY Oil Additiv, 0.3 liter

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Discover an amazing fuel-saving solution that also prolongs the overall lifespan of your engine.

The LIQUI MOLY Oil Additiv is a 0.3 liter engine additive that falls under the antifriction category. It works to decrease oil and fuel consumption, prevent the buildup of deposits, and extend the lifespan of the engine.

This product is recommended for use in both passenger cars and motorcycles. It should be added in a quantity of no more than 3-5% of the total oil volume, regardless of whether the engine is fueled by gasoline or diesel.

This additive has undergone successful testing on catalytic converters and turbocharged engines. It is primarily composed of molybdenum dioxide.

It is compatible with all types of automotive oils and maintains its stated properties even under increased loads, without causing any sedimentation.

The solidification process begins at temperatures as low as -20 degrees Celsius.

Characteristics

• Composition – antifriction;
• Base additive – suspension of MoS2;
• Color – gray-black;
• Flash point – 200 degrees;
• Pour point – below -20 degrees.