How many bottles of fuel additive should be added each time?

[MacLincoln]

Usually, the initial use requires 2 bottles, followed by 1 bottle for subsequent uses. Fuel additive usage: Fuel additives are unnecessary for new vehicles with less than 20,000 kilometers of mileage. For vehicles exceeding 20,000 kilometers, they should be added as needed, typically one small bottle per tank of fuel. Long-term use of fuel additives can be harmful to the engine. Excessive use can increase carbon deposits in the combustion chamber, and prolonged overuse may even lead to engine knocking, detonation, and worsened vehicle emissions. Precautions: New vehicles are not recommended for fuel additive use, as they have not been driven many kilometers and generally operate under good conditions, with minimal carbon deposits. Frequent use of fuel additives is not advisable, as it can lead to oil sludge, gum formation, and increased carbon deposits in the combustion chamber. Instead, additives should be used based on the vehicle's specific conditions. For severe carbon deposits, manual cleaning is still necessary. Fuel additives are not a miracle solution; vehicles with heavy carbon buildup require manual treatment, as additives cannot completely remove them. For older vehicles, the oil filter should be cleaned or replaced before adding fuel additives. Use fuel additives cautiously and rationally according to the vehicle's condition.

[LeCorbin]

I've been driving for nearly 20 years and regularly use fuel additives to maintain engine health. Generally, I only add one bottle per fuel fill-up, which corresponds to a full tank size of about 40-50 liters. Never add more, as excessive use may lead to chemical buildup that could clog fuel injectors or sensors, negatively affecting performance. My own SUV gets a treatment every two months, and I've noticed smoother engine operation and about a 5% reduction in fuel consumption. For beginners, I recommend starting with half a bottle to observe your vehicle's reaction, as responses vary by car condition. Regular use helps clean carbon deposits and extends engine life, but don't expect it to fix major issues – if your car has problems, professional repair is still necessary.

[VanOmar]

Having worked in car repair for ten years, I've seen countless cases where engine problems were caused by owners improperly using fuel additives. You only need to add one bottle of fuel additive per tank of gas—one bottle is perfectly matched to a full tank. Adding more can lead to excessively high additive concentrations, which may corrode fuel lines or damage the electronic fuel injection system, ultimately costing more in repairs. When choosing a product, look for certifications like the API mark, and avoid cheap, no-name brands. I've found that adding one bottle can improve startup smoothness in older cars, but newer vehicles generally don't need it. From an economic standpoint, the cost is low—just 20 yuan per bottle, once a month. It can also slightly improve fuel efficiency, saving some money on gas. Remember to pour it in before refueling to ensure thorough mixing for better performance. Don't wait until the fuel light comes on—it won't work effectively then.

[SanEmilia]

Since I bought my new car, I've been consistently adding a bottle of fuel additive every time I refuel. It's super easy—just one bottle per tank, directly poured into the fuel tank. This makes the engine run quieter and eliminates acceleration shuddering. The cost is minimal, just over ten yuan per bottle, but regular use prevents carbon buildup, saving you from major repairs later. Don't overdo it—one bottle is enough, as too much can pollute the exhaust. For city commuting, it helps save a bit on fuel costs, adding an extra dozen kilometers per tank. Other precautions? Make sure the car is at normal operating temperature when refueling—avoid extremely hot or cold conditions. Even new cars can benefit, but don’t add it monthly—once every two months is sufficient. The effects are quite noticeable; just try it once to see the difference.