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.

The Liqui Moly MoS2 Anti-Friction Engine Treatment is designed to enhance engine performance by reducing friction, making it a suitable choice for car owners looking to address noisy lifters. One of its major strengths is its ability to form a high load-bearing film on friction surfaces, which can significantly improve engine sound and stability, particularly at high RPMs.

Compatibility is another positive aspect, as this additive has a universal fit type, meaning it can be used in a variety of vehicles. However, there are some considerations to keep in mind. While the product boasts impressive cleaning and lubrication properties, its effects may vary depending on the specific condition of the engine. Some users might not experience the dramatic improvements they expect, especially if their engine has been poorly maintained or is significantly worn.

Furthermore, as with many additives, it is essential to follow the manufacturer's instructions closely to achieve the best results. While the flash point of 181 degrees Celsius is adequate for most conditions, it could raise concerns for those operating in extreme environments. The Liqui Moly MoS2 Anti-Friction Engine Treatment is a solid option for car owners looking to minimize engine noise and enhance performance, particularly for noisy lifters, but individual results can vary, and proper maintenance is key to getting the most out of any additive.

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.