Can fuel additive be added after refueling?

[VonKeira]

Fuel additive can be added after refueling, but adding it before refueling will yield better results. Here are specific details about fuel additives: 1. Benefits of adding fuel additive first: The impact during gasoline refueling helps the fuel additive mix thoroughly and evenly. As the vehicle moves, the additive will gradually blend uniformly with the gasoline. 2. Drawbacks of fuel additives: Prolonged use may cause varying degrees of impact. For turbocharged engines, long-term use can lead to carbon buildup. 3. Usage cycle of fuel additives: It's recommended to use fuel additives every 5,000 kilometers; otherwise, it may easily clog the three-way catalytic converter. 4. Different types of fuel additives: Some improve gasoline's anti-knock properties, thereby reducing the likelihood of engine knocking, but long-term use can accumulate significant carbon deposits and, conversely, increase fuel consumption.