Is There Harm in Adding Too Much Fuel Additive?
2 Answers
Adding too much fuel additive can be harmful. Fuel additives are auxiliary fuel supplements, and long-term excessive use can increase carbon deposits in the combustion chamber, lead to engine knocking or detonation, and worsen vehicle exhaust emissions. Therefore, it's important to pay attention to the quality of the fuel additive when using it. The role of fuel additives is to clean the fuel system. They are added to the fuel tank when refueling and clean carbon deposits during vehicle operation, thereby improving gasoline atomization and ensuring more complete combustion. Fuel additives are primarily used to compensate for fuel quality defects and incidentally provide some cleaning and protection for the fuel system and engine cylinders. The working principle of fuel additives is to create micro-explosions in the combustion chamber, causing secondary atomization of the fuel, promoting complete combustion, enhancing engine power, improving thermal efficiency, and reducing emissions.
Fuel additives are definitely not something you can just pour in like a drink. Once I accidentally added half a bottle too much, and the car clearly didn't run right. Overdosing leads to increased combustion residues, making carbon buildup worse than not using it at all. Chemical residues can also corrode fuel lines—I've personally seen cases where the sealing rings of old cars' fuel injectors were melted. Especially those containing polyetheramine, excessive amounts can form gel-like substances that clog fuel injectors. The scariest part is the catalytic converter—metal additives can sinter and completely ruin this component worth thousands. Cars meeting China VI emissions standards need extra caution, as chemical buildup can clog the particulate filter, disabling its regeneration function. Long-term overdosing can even poison the oxygen sensors, guaranteeing failed emissions tests. Remember the ratio marked on the bottle—usually one bottle per 50-liter fuel tank. When in doubt, less is more.
