10 Best Oil Additive 2025 in the United States

The Lucas Oil 10002 Heavy Duty Oil Stabilizer is designed to enhance the performance and longevity of your vehicle's oil. One of its key strengths is the ability to extend oil life by at least 50%, which means fewer oil changes and lower maintenance costs. This product also excels in reducing oil consumption, which can be beneficial for both your wallet and the environment. It’s particularly effective in eliminating dry starts, a common issue that can cause significant engine wear.

By raising oil pressure, it ensures better lubrication and engine performance, ultimately leading to increased power and improved fuel efficiency, translating to more miles per gallon. The product's versatility is also a plus, as it is suitable for multiple vehicle types. However, the weight of 31.4 pounds for the 4-pack can be cumbersome for some users to handle. Additionally, the product dimensions are relatively large, requiring adequate storage space.

While Lucas Oil is a reputable brand in automotive care, this product might be on the pricier side compared to other oil additives. Despite these minor drawbacks, the Lucas Oil 10002 is highly effective in addressing critical areas such as reducing wear, preventing corrosion, and improving engine performance, making it a valuable addition to regular maintenance routines.

The Liqui Moly Oil Additive Cera Tec is designed to enhance engine performance and protection for both petrol and diesel engines. It boasts several strengths, including compatibility with all commercially available motor oils and stability under high thermal and dynamic loads. This makes it a versatile choice for various engine types and conditions.

Users highlight its ability to provide smoother engine performance, reduce friction, and lower fuel consumption, which can be beneficial for both everyday drivers and those seeking better fuel efficiency. Additionally, its resistance to extreme temperatures ensures that it performs well in diverse climates without forming deposits, which means it works seamlessly with standard filter systems.

It's important to note that while the product's primary benefit is engine protection and performance enhancement, users should not expect it to resolve all engine issues. The packaging is also relatively small at 300 ml, which might require frequent purchases for extended use. Despite this, its high ranking in engine and oil fluid additives suggests strong user satisfaction and effectiveness. This oil additive is particularly suitable for those looking to improve their vehicle's engine performance and longevity while maintaining compatibility with existing motor oils.

Liqui Moly MoS2 Anti-Friction Engine Treatment is a well-regarded oil additive that aims to enhance your engine's performance by forming a high load-bearing film of lubricant on all friction surfaces. This treatment is designed to improve your engine's smoothness and control, especially at high RPMs, which can be beneficial for various driving conditions.

The product is versatile, with a universal fit type, making it suitable for a wide range of cars. It also boasts a high flash point of 181 degrees Celsius, indicating good thermal stability under high temperatures. Additionally, it comes from a reputable German manufacturer, Liqui Moly, which is known for quality automotive products.

While this additive can provide significant benefits in terms of reducing friction and wear, it may not be a complete solution for engines with more severe mechanical issues. Users should consider this additive as part of regular maintenance rather than a fix-all for existing problems. For regular upkeep and performance enhancement, this product stands out as a top choice in its category.