10 Best Oil Additives 2025 in the United States

The Sea Foam SF-16 Motor Treatment Oil Additive comes in a convenient three-pack, with each can containing 16 ounces of foam. It ranks well in the automotive category, specifically in engine and oil fluid additives, suggesting it is a popular choice for automotive maintenance. The product does not require batteries and is not discontinued by the manufacturer, ensuring its availability for users.

The foam form might make application easier compared to liquid additives, potentially reducing spills and waste. This oil additive is designed to meet various key specifications such as enhancing viscosity, providing detergents, anti-wear agents, corrosion inhibitors, friction modifiers, and seal conditioners. These features are essential for maintaining engine health, reducing wear and tear, and improving engine performance.

With its essential features, it can be a beneficial addition for those looking to enhance their engine oil's performance and longevity.

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.