10 Best Oil Additives 2025 in the United States

The Lucas Oil 10002 Heavy Duty Oil Stabilizer is a well-regarded oil additive, especially popular among car owners looking to enhance their engine performance. One of its main strengths is its formulation with 100% petroleum, which many users find effective in improving engine lubrication and overall efficiency. This product serves multiple purposes due to its blend of viscosity improvers, detergents, anti-wear agents, corrosion inhibitors, friction modifiers, and seal conditioners. These features make it suitable for both new engines and ones operating under high-stress conditions, appealing to a wide range of vehicle types.

On the downside, while the product is versatile, some users may find the oil stabilizer somewhat on the pricier side compared to other additives. Additionally, while it is suitable for a variety of vehicles, those with older engines might want to proceed with caution, as some components may not be ideal for all engine types. Furthermore, the heavy 1-gallon container may be cumbersome for casual users who only need a small amount for their oil changes.

The Lucas Oil 10002 Heavy Duty Oil Stabilizer is an effective, multi-use product that is particularly beneficial for car owners seeking to enhance engine performance and longevity. However, potential buyers should consider their specific vehicle needs and whether the investment aligns with their maintenance routine.

The LIQUI MOLY Oil Additive Cera Tec 20002 is a solid choice for those looking to enhance their engine's performance and longevity. One of its standout features is its ability to mix well with all commercially available motor oils, making it versatile for various vehicles. Users will appreciate the smoother engine performance, reduced friction, and potentially lower fuel consumption that this additive offers. It also boasts impressive thermal stability, working well under both high and low temperatures, which is essential for engine protection during extreme conditions.

In terms of its formulation, the presence of effective components such as viscosity improvers, detergents, and anti-wear agents enhances the protection and efficiency of the engine. This makes it particularly suitable for individuals who frequently drive in demanding environments or those who want to maintain their engine’s health over time.

While this oil additive has many strengths, potential drawbacks should be considered. Some users may find the price slightly higher compared to other oil additives, which could be a consideration for those on a tight budget. Additionally, while it claims to be compatible with various filter systems, some users may still experience concerns about compatibility with specific oil types or brands.

The Liqui Moly MoS2 Anti-Friction Engine Treatment is designed to enhance motor oil performance by forming a high load-bearing lubricant film on all friction surfaces. This feature helps in reducing engine wear, particularly beneficial at very high RPMs, and contributes to a quieter and smoother engine operation. It holds the top position in the Engine & Oil Fluid Additives category, suggesting its effectiveness and popularity among car owners.

The treatment includes viscosity improvers and friction modifiers that help maintain optimal oil thickness and reduce friction, enhancing engine efficiency and longevity. It also contains anti-wear agents and corrosion inhibitors that protect the engine components from wear and rust, further extending the engine's life. The flash point of 181 degrees Celsius indicates good thermal stability. The product is universally fit for various car types, making it versatile.

This additive could significantly benefit car owners looking to enhance engine performance, reduce wear, and protect against corrosion.