Are Fuel Additives Useful?
2 Answers
Fuel additives are useful. They are categorized into cleaning type, maintenance type, and performance-enhancing type. Both cleaning and maintenance types contain cleaning agents in their chemical composition, which can effectively clean or inhibit carbon deposits in the engine, addressing issues like insufficient power and fault codes caused by poor fuel quality. The functions of fuel additives include: 1. Removing carbon deposits and cleaning the fuel system; 2. Enhancing engine performance; 3. Saving fuel; 4. Preventing corrosion, rust, providing lubrication, and reducing noise; 5. Cleaning carbon deposits and gum from the engine intake and fuel injectors; 6. Acting as anti-corrosion agents, anti-knock agents, and combustion improvers to enhance combustion effects.
I always thought fuel additives were somewhat useful, especially for an old-timer like me who's been driving for ten years. During the last maintenance, I found serious carbon buildup in the engine, and the mechanic recommended a cleaning additive. After using it a few times, I did feel the acceleration became smoother. This type of additive mainly relies on chemical components to break down carbon deposits in the fuel system and combustion chamber, equivalent to giving the engine an internal SPA. However, don't expect it to significantly reduce fuel consumption—at best, it might save you a few tenths of a liter per 100 kilometers. New cars don't really need it, but it's quite suitable to use it periodically after running 50,000 to 60,000 kilometers. Remember to choose reputable brands and don't go for the cheap ones, or you might end up clogging the fuel injectors.
