Is Engine Internal Cleaning Fluid Useful?
2 Answers
Engine internal cleaning fluid is useful. Engine internal cleaners can remove residual sludge and dirt from the oil passages, and to some extent, they can also clean carbon deposits from the piston rings and ring grooves, providing practical maintenance benefits for the engine. However, due to their short retention time in the engine lubrication system and the inherent limitations of this no-disassembly cleaning method, the effectiveness of engine internal cleaners is relatively limited. Engines are applicable not only as power generation devices but also as entire machines including power units (such as gasoline engines and aircraft engines). Their types include internal combustion engines (e.g., gasoline engines), external combustion engines (e.g., Stirling engines, steam engines), gas turbines (used in racing cars), electric motors, etc.
As a long-time driver, I genuinely find engine internal cleaning fluid useful, especially after using it on my old car that had unstable idling and increased fuel consumption after years of use. Regular use of cleaning fluid effectively removes carbon deposits and sludge, improving combustion efficiency and making the car run smoother, with horsepower restored almost to its original level. After using it a few times, I clearly noticed less black smoke from the exhaust pipe and a slight drop in fuel consumption. Of course, it should be used within the oil change cycle—too frequent use may damage engine seals, so I use it once a year during maintenance. The cleaning fluid isn’t too expensive, much cheaper than professional cleaning at a dealership, and it’s easily available online or at auto repair shops. Follow the instructions carefully to ensure compatibility with your car model. Overall, it helps extend engine life, but don’t expect it to solve major issues—treat it as a preventive maintenance tool with good results.
