10 Best Additive For Noisy Lifters 2025 in the United States

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 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 Sea Foam ST20 Truck and SUV Motor Treatment is a versatile additive designed to improve the performance of both gas and diesel engines. One of its standout features is its ability to clean critical engine components, such as fuel injectors, carburetors, and intake valves, which can help restore engine efficiency and reduce noise from lifters. This cleaning capability is crucial for maintaining engine health, especially in older vehicles or those used under heavy loads.

In terms of lubrication, this product also works effectively in the crankcase, helping to liquefy harmful residues and deposits. This is an essential aspect for anyone looking to prolong the life of their engine, as it reduces wear by ensuring all moving parts are properly lubricated. The fact that it can stabilize fuel for up to two years adds additional value, making it a good choice for those who may let their fuel sit for longer periods.

The Sea Foam ST20 is compatible with both conventional and synthetic motor oils, but it might not suit everyone. Users looking for a more specialized or targeted solution for specific engine issues may find it somewhat general in its approach. The Sea Foam ST20 is an excellent option for individuals who frequently use trucks or SUVs and need a reliable cleaner and stabilizer. It can be especially beneficial for those who encounter engine noise and are looking for a straightforward solution. Yet, those with very specific needs may want to explore more specialized alternatives in the additive market.