10 Best Engine Oil Additives 2026 in the United States

The Lucas Oil 10002 Heavy Duty Oil Stabilizer is designed for multiple vehicle types and promises to enhance oil performance in several ways. This product notably increases oil life by at least 50%, which means fewer oil changes and potential cost savings. It also reduces oil consumption, making it a great choice for vehicles that tend to burn oil quickly. The eliminations of dry starts can be particularly beneficial, as it ensures that the engine is well-lubricated from the moment it is started, reducing wear and tear over time.

Additionally, the stabilizer raises oil pressure, which can improve engine performance and efficiency. Users have also reported increased power and better fuel efficiency, which are significant advantages for any vehicle owner looking to optimize their vehicle's performance and save on fuel costs.

On the downside, while the product performs well in enhancing oil properties, it may not contain specific detergents, friction modifiers, or seal conditioners. As a result, users looking for comprehensive engine protection might need to use additional products to meet these needs.

The Sea Foam SF128 Motor Treatment is a versatile and reliable engine oil additive that is well-suited for those looking to maintain and enhance their engine's performance. One of its main strengths lies in its ability to dissolve and clean fuel deposits and sticky residues from key components like gas and diesel injectors, carburetors, and combustion chambers, ensuring that the engine runs smoothly and efficiently.

Additionally, the product is effective in stabilizing stored fuel for up to two years, which is beneficial for those who may not use their vehicles frequently. This stability helps prevent the formation of gum and varnish, preserving the quality of the fuel over time. Another notable feature is its high-temp upper cylinder lubricity, which provides essential lubrication and protection to the fuel system from wear and corrosion. This can prolong the life of the engine and improve its performance.

One of the biggest advantages of Sea Foam is that it contains only petroleum-based ingredients without harsh detergents or abrasive chemicals. This makes it a safer option for your engine, reducing the risk of damage. For consumers seeking a comprehensive solution to clean and maintain their engine, Sea Foam SF128 Motor Treatment is a practical and effective choice.

The Liqui Moly Cera Tec oil additive is designed to protect engines by reducing wear and tear through ceramic-based technology, which helps lower friction and fuel consumption. It mixes easily with all common motor oils and remains stable even under very high or low temperatures, ensuring reliability during different driving conditions. This additive doesn't cause deposits and works well with standard oil filters, so it won’t harm your engine or its components.

It's especially useful for those wanting smoother engine performance and extra protection against engine wear. The product comes in a convenient 300 ml size, suitable for regular maintenance but may require periodic reapplication depending on your driving habits. Some users praise its effectiveness, reflected by a high rating and strong popularity.

This makes it a solid choice for both petrol and diesel vehicle owners seeking to extend engine life and improve efficiency with a trustworthy additive.