Do Vehicles Need Fuel Additives?

[JudeRose]

Whether to add fuel additives to your car depends on the situation. Here are the details: When to add fuel additives: When a car has driven 20,000-30,000 kilometers, sludge and carbon deposits increase, leading to idle shaking, reduced power, lower RPM, and increased fuel consumption. In such cases, adding fuel additives can be considered. However, it is essential to purchase from official channels. Using counterfeit products not only fails to remove carbon deposits and maintain the engine but may also cause damage to the engine. Precautions for using fuel additives: Long-term use of fuel additives can harm the engine. Excessive use may increase carbon deposits in the combustion chamber. If overused for an extended period, it could even lead to engine knocking or detonation and worsen vehicle exhaust emissions.

[Snow]

I've used fuel additives several times before and felt they had some effect, but they're not essential. My old car has nearly 150,000 kilometers on it and often gets stuck in city traffic, making the engine prone to carbon buildup. After adding it, I noticed reduced noise and smoother acceleration. However, experts say modern new car engines are well-designed, and adding additives might actually disrupt the system. I recommend occasionally using one to clean the injectors and cylinders, but don't expect it to save much fuel or boost power significantly. Trying one bottle every 5,000 kilometers is fine, but regular maintenance like oil changes is more important. Don’t blindly follow advertising hype—judge based on your car's condition. Older cars might benefit more, while new cars hardly need it. In short, don’t treat it as a miracle solution, just as supplementary maintenance.

[LaKai]

From a technical perspective, fuel system cleaners are additives containing cleaning components designed to dissolve carbon deposits and improve combustion efficiency. They can enhance fuel spray uniformity for smoother engine operation and may help prevent certain issues over long-term use. However, their use isn't mandatory and depends on vehicle type: turbocharged engines or vehicles frequently driven at low speeds are more prone to carbon buildup and may benefit from occasional treatment. Modern engines with strong self-cleaning capabilities might experience ECU tuning interference if additives are used. Personal experience shows limited effectiveness, and frequent use should be avoided to prevent solvent corrosion or fuel system clogging. Choose reputable brands and apply quarterly at most. In automotive engineering principles, such additives aren't daily necessities but rather serve as emergency cleaning tools.

[GenesisAnn]

As a new driver, I heard about adding fuel additives to clean carbon deposits when buying a used car. I tried mixing a bottle during refueling once, but didn't notice any changes in the engine after driving for a while. Online research says it can prevent issues, but some criticize it as a pure waste of money. The car manual doesn't recommend specific products, and the mechanic at the repair shop said regular maintenance is sufficient. I feel confused and have decided to ignore it for now, only considering it if the car malfunctions. After all, safety comes first, and it's better not to tamper with the engine unnecessarily.