How much fuel additive should be added each time?

[LaMaya]

Fuel additive should be added about 300ml each time. The following is the relevant content introduction: The purpose of fuel additive is to solve the carbon deposit problem in the fuel system of fuel injection models, quickly restore the engine to optimal working condition, compensate for certain deficiencies in gasoline properties, and endow gasoline with characteristics such as improved atomization, reduced wear, engine protection, and lower emissions. The functions of fuel additive include: removing carbon deposits, improving atomization, protecting the engine, reducing engine wear, eliminating black smoke, and lowering emissions. The correct way to use fuel additive is: add the fuel additive before refueling, then add gasoline.

[Reed]

I remember when I first started using my car, I was always worried about engine carbon buildup, so I bought a bottle of fuel additive to try. The clerk told me that the standard usage is to pour the entire bottle directly into the fuel filler opening every time you fill up the tank. The exact amount depends on the instructions on the bottle—for example, my bottle said 'suitable for 50-60 liter tanks.' If your tank is smaller or larger, you’ll need to adjust accordingly. Don’t add more on your own, as it could waste money and even harm the engine. I prefer adding it to an empty tank before refueling, so the fuel can mix it evenly as it flows in. After using it, I noticed the car starts up faster, but you need to use it regularly for it to be effective—usually every 5,000 kilometers or during an oil change. The main purpose is to clean the fuel injectors and help the fuel burn more cleanly, which can save a bit on fuel costs in the long run. However, choose products based on reputation—don’t cheap out on off-brand stuff. In short, just follow the instructions—always use a full bottle each time.

[LeBentley]

As someone who frequently drives to pick up and drop off kids, I pay close attention to the cost-effectiveness of fuel additives. Typically, I use one standard bottle per application, about 150 milliliters, pouring it directly into the fuel tank. If you're worried about overuse, check the bottle's instructions first—many brands recommend dosage based on tank capacity. For example, my car has a 55-liter tank, so one bottle is just right. Avoid using too little or too much; overuse not only wastes money but may also increase engine strain and cause extra pollution. I always wait until the tank is nearly empty before adding it, ensuring better mixing. Fuel additives help clean the fuel system and reduce carbon buildup, especially useful during frequent traffic jams. Using one bottle every quarter maintains performance. Annually, it costs around a hundred yuan, much cheaper than engine repairs. The key is not to overuse—following the instructions is the most hassle-free approach.

[LeHenry]

I've been into cars for years and have used no less than ten types of fuel additives. The amount to add varies by brand—for example, a 3M bottle contains 120ml, suitable for a 60-liter tank, so follow the instructions. Timing is crucial too; it's best to pour it in when the tank is nearly empty, then fill up with fuel. The process is simple: just open the cap and pour. Don't skimp by adding half a bottle—it won't work well—and adding too much might corrode the fuel lines. I use one bottle every 5,000 kilometers and notice quicker throttle response and about 5% better fuel efficiency. Fuel additives mainly rely on detergents to remove carbon deposits, but they have limited effect on very old cars. Storage matters too—keep them in a cool place to prevent evaporation. Bottom line: one full bottle per use is the way to go.