10 Best Additive For Noisy Lifters 2025 in the United States

The Liqui Moly Hydraulic Lifter Additive is designed to reduce engine noise caused by noisy lifters by improving the lubrication of your engine oil and cleaning valve bores. It's compatible with a wide range of vehicles, including those with turbochargers and catalytic converters, which is helpful if you drive a modern car with these features. The additive works by enhancing lubrication properties, which helps hydraulic tappets operate more quietly and smoothly. It also helps clean parts inside the engine, which can prevent buildup that might cause noise or reduce performance.

One of the key benefits is its dual action—both cleaning and lubricating—which means it can help maintain the engine's health over time. The product has a moderate flash point (60°C), so it should be handled with some care, but this is typical for additives. In terms of ease of use, it comes in a handy pack size that’s not too bulky.

This product suits vehicle owners looking for a simple, effective way to reduce lifter noise and keep their engine parts cleaner and better lubricated. Its compatibility with turbocharged and catalytic converter-equipped engines is a plus, making it versatile for many modern cars. However, this additive is not a fix for mechanical issues beyond noisy lifters—it serves as a maintenance aid rather than a repair solution. If you’re experiencing severe engine noise or other problems, a mechanic’s inspection is still recommended.

Sea Foam Motor Treatment is a versatile fuel and oil additive designed to clean and lubricate engine parts, which is especially useful for noisy lifters. It works well with both gasoline and diesel engines, as well as with all types of motor oils, including synthetic and conventional, making it highly compatible. This product effectively cleans fuel injectors, carburetor passages, intake valves, and combustion chambers, which helps reduce noise caused by deposits and poor lubrication.

It also lubricates the upper cylinders, helping to protect engine components and smooth out noisy lifters. The treatment works in the crankcase oil to break down harmful residues, which helps maintain engine health over time. Its viscosity and additive type are suitable for long-term use and it even stabilizes fuel for up to two years, which can be helpful if you don't use your vehicle frequently.

While it lubricates and cleans well, it may not replace the need for mechanical repairs if noisy lifters are caused by worn parts. Additionally, it comes in a 16 oz bottle (pack of four), which might be more than needed for casual users. With its well-established reputation, Sea Foam offers a dependable solution for those seeking to reduce engine noise and maintain performance through effective cleaning and lubrication.

The BG MOA & EPR Motor Oil Additive is a lubrication supplement designed to help restore engine performance and reduce noise from lifters by improving lubrication and cleaning internal engine parts. It comes as a combined package, which is convenient for users wanting both cleaning and lubrication benefits in one. This product works with cars and trucks, showing good compatibility across common vehicle types. Its cleaning properties help remove deposits, while the lubrication ingredients help reduce friction, potentially leading to quieter and smoother engine operation. The viscosity is suitable for mixing with motor oil without causing thickening that could harm engine parts. However, the flash point of 43°C suggests it requires careful handling and storage.

The additive type focuses on motor oil enhancement rather than a specialized lifter-specific formula, which can address general noise issues but may be less targeted for severe lifter problems. With a strong customer rating of 4.8 out of 5 and positive feedback from nearly a thousand users, it appears effective for many people. This product is not marketed explicitly as a fix solely for noisy lifters, so those with serious lifter wear might need a more specialized treatment or mechanical repair.

This additive is a solid choice for vehicle owners looking to improve engine cleanliness and lubrication to help reduce lifter noise, especially as a preventive or mild restorative option.