Is it acceptable to add fuel before adding fuel additive?
2 Answers
The correct sequence for adding fuel additive is to add the fuel additive first before refueling. This allows the additive to mix thoroughly with the fuel under the impact of fuel injection, achieving optimal performance. Precautions for using fuel additives include: 1. Always purchase branded fuel additives and avoid randomly using products recommended by repair shops; 2. New vehicles should not rush to use fuel additives; 3. Do not rely solely on fuel additives to clean engine carbon deposits. The purpose of fuel additives is to address carbon deposit issues in fuel injection systems, quickly restore optimal engine performance, compensate for certain deficiencies in gasoline properties, and enhance gasoline characteristics such as improved atomization, reduced wear, engine protection, and lower emissions.
As a car enthusiast who has driven German cars for ten years, using fuel additives is a common practice. Adding the additive after refueling is acceptable, but not ideal. The reason is simple: the additive needs to fully mix with the fuel to effectively clean the engine. If the order is reversed, it may accumulate at the bottom of the fuel tank, leading to uneven initial mixing and affecting the carbon deposit removal. However, don’t worry—it’s not a big deal. After driving a few dozen kilometers, the fuel and additive will naturally mix. Once, I forgot and added the additive after refueling, but the car still ran smoothly without issues. It’s best to add the additive first and then refuel, as the pumping action helps mix them directly. Also, choosing the right brand is crucial—opt for reputable products to avoid counterfeit ones that could harm your car. Regular use can save fuel and extend engine life, but avoid exceeding the recommended dosage each time.
