10 Best Additive For Noisy Lifters 2026 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 Motor Oil Additive is designed to improve engine oil performance and protect your engine, which can be especially helpful for reducing noise from lifters. It works well by preventing oil from oxidizing and thickening, even in tough driving conditions, helping maintain smooth engine operation and potentially reducing lifter noise.

This additive also helps reduce engine wear and prevents sludge and varnish buildup, keeping your engine cleaner and running longer. It’s compatible with most engine oils and doesn’t complicate the viscosity, meaning it won’t make your oil too thick or too thin. It comes in convenient 11oz cans and is available as a two-pack, offering good value for regular maintenance.

While it’s not the cheapest option on the market and users with very specific oil requirements or synthetic blends should verify compatibility, BG MOA provides a reliable option that extends engine life and keeps oil cleaner under stress. It may reduce lifter noise by improving oil condition, although it is not a guaranteed fix for all noisy lifter problems, especially if they are mechanical rather than oil-related.