Is Engine Cleaner Useful?
3 Answers
Engine cleaner is useful, but its effectiveness is relatively limited. Engine cleaner can remove residual sludge and dirt from the engine oil passages, and to some extent, it can also clean carbon deposits from the piston rings and ring grooves, providing practical maintenance benefits for the engine. However, due to its short retention time in the engine lubrication system and the inherent limitations of this no-disassembly cleaning method, the effectiveness of engine cleaner is relatively limited. Although the effect of engine cleaner is somewhat limited, its convenience of use makes it a practical option. With regular use, engine performance can still see significant improvement. Additionally, many 4S shops currently use this method to clean the engine lubrication system.
I've been into cars for over a decade now, and I genuinely feel engine cleaners are useful, especially for older vehicles. Over time, carbon deposits build up in the engine, affecting performance—like sluggish acceleration or increased fuel consumption. The cleaner flows through the fuel system into the engine, softening those black carbon deposits and helping them flush out easily. The results? Smoother acceleration and slightly reduced engine noise after use. Of course, choosing a reputable brand is crucial, as low-quality ones might clog pipes or damage components. Using it periodically is quite convenient, particularly when driving frequently in city traffic jams where carbon buildup is common. I recommend using it every six months, ideally during an oil change, to keep the car running smoothly and extend the engine's lifespan. Don’t expect it to fix major issues, but for minor maintenance, it’s hassle-free and cost-effective.
I commute a lot and have tried engine cleaners for DIY car maintenance. They work, but it depends. For new or well-maintained cars, the effect is minimal, but for my 5-year-old car, it helped with quicker starts and a slight 5% fuel efficiency improvement. The process is simple: add it to old oil, run the engine for a few minutes, then change the oil. The key is choosing the right product—cheap ones may be ineffective or even damage sensors. Also, don’t treat it as a cure-all; severe carbon buildup still requires professional cleaning. I like it for saving money and time, avoiding major repairs. Friends say pairing it with fuel additives works better, but don’t overuse to avoid environmental harm. Overall, using it periodically helps prevent minor issues—practical.
