Is Engine Cleaner Effective?
3 Answers
Engine cleaner is effective. Here are the functions of engine cleaner: 1. Function one: Engine internal cleaner, also known as cleaning fluid, is an automotive maintenance product used to clean harmful substances such as sludge, carbon deposits, and gum inside the engine, keeping the engine interior clean, enhancing oil fluidity, reducing wear, and extending the engine's service life. 2. Function two: It cleans valve hydraulic components, restores piston ring elasticity, reduces engine noise, and minimizes lubrication oil loss; it also neutralizes acidic substances, prevents part corrosion and exhaust emissions, reduces air pollution, and extends the lifespan of the three-way catalyst.
I've tried several engine cleaners, and most products work quite well. The effect isn't very noticeable on new cars or those with little carbon buildup, but for older cars with over 100,000 kilometers, regular use of cleaners seems to improve throttle response slightly and reduce fuel consumption a bit. Just add it in and drive 20-30 kilometers—very convenient. However, it's important to choose reputable brands like 3M or Shell for quality assurance. Avoid cheap off-brands, as they may not clean thoroughly or could damage the fuel system. Adding a bottle during routine maintenance can extend engine life and reduce trips to the repair shop. Cleaners are good for regular upkeep but can't fully replace professional decarbonization services. For severe carbon buildup, you'll still need a technician's help.
Having worked in the auto repair industry for several years, I've seen plenty of such products. Carbon cleaning agents are effective at removing deposits, reducing wear on internal engine components, and ensuring smoother operation. It's generally recommended to use them every 50,000 kilometers—just add to the oil system, run it through, then change the oil. It's safe and practical. However, avoid overuse, especially with turbocharged or direct-injection engines, as they can be sensitive, and excessive cleaning may damage parts. The appeal lies in their simplicity and cost-effectiveness—far more economical than a full engine teardown. Pair them with regular oil changes for optimal results. When purchasing, check for certifications to ensure they won't corrode seals.
