Why does fuel consumption increase after using fuel additive?

[VonNorah]

After using fuel additive, the increase in fuel consumption is because the main function of fuel additive is to remove carbon deposits, and it does not directly save fuel. The rise in fuel consumption can be caused by various factors, including driving habits, road conditions, weather, whether the air conditioning is on, the number of traffic lights, vehicle load, fuel quality, and the vehicle's own issues. Below are the details: For vehicles with dirty fuel systems, there may be short-term unstable idling, poor fuel supply, or clogging, which are normal. This is because excessive deposits in the car's fuel system are cleaned by the fuel additive, clogging the fuel filter (fuel filter element) or carburetor. Continued use will gradually remove the deposits, restoring fuel flow and normal operation. In rare cases, it is recommended to clean or replace the fuel filter element before further use.