At what mileage should fuel additive be used?

[DiEmiliano]

Fuel additive should be added as needed for vehicles exceeding 20,000 kilometers, generally one small bottle per tank of fuel. Functions of fuel additive: The cleaning and purifying agents can remove harmful substances such as gum deposits in the fuel and engine carbon buildup. It can eliminate carbon deposits in the fuel injection nozzles, intake valves, and intake manifolds of the fuel system, restoring the vehicle's original power and maintaining optimal operating conditions over the long term. Precautions for using fuel additive: Long-term use of fuel additive can be harmful to the engine. Excessive use can increase carbon buildup in the combustion chamber. If excessive amounts are added over a prolonged period, it may even lead to engine knocking, detonation, and other issues, as well as worsen vehicle exhaust emissions.

[DelAsher]

With extensive driving experience, I recommend adding fuel system cleaner regularly from the moment you buy a new car. Typically, adding it every 5,000 kilometers yields the best results, as this is when carbon deposits just start forming in the engine. The additive can proactively clean the fuel system and injectors, keeping the car running smoothly. If you wait until symptoms like unstable idling or increased fuel consumption appear, the effectiveness may diminish, potentially requiring additional repairs. I prefer pouring it directly into the fuel tank during refueling, always choosing reputable brands over cheaper alternatives. Long-term use significantly extends engine life, reduces trips to the repair shop for hassle-free savings, and enhances driving comfort. Developing this habit early is crucial—don't wait until problems become severe.

[DelEliana]

As someone who frequently works on cars, I believe the key to using fuel additives lies in the vehicle's condition. For new cars, it's recommended to start adding them regularly from the first tank of fuel, once every 5,000 kilometers. For older cars, check for signs of carbon buildup before deciding to use them. It helps clean internal engine deposits, improve fuel efficiency, and reduce wear. The operation is simple—just add it to the fuel tank and let it mix with the gasoline while driving, but avoid doing it when the engine is cold. Combined with good driving habits, such as gently pressing the accelerator instead of sudden acceleration, the effects are more noticeable. Choose reliable products to avoid adverse effects. From my experience, early use brings early benefits and helps avoid major repairs.

[GabrielaFitz]

When I first bought my car, I consulted an experienced mechanic who suggested I try fuel additives starting from 3,000 kilometers. I add them every 5,000 kilometers, and now the car responds quicker with slightly lower fuel consumption—quite cost-effective. Using them early can prevent carbon buildup issues, avoiding the hassle of fixing problems later. I pour it in after refueling for convenience. It's safer to choose products from well-known brands. Doing this regularly significantly reduces maintenance costs and improves driving performance. Combined with other good habits, like avoiding prolonged idling, it offers better engine protection.