What should you do to avoid overfilling your fuel tank?

To avoid overfilling your fuel tank, it is essential to fill it slightly below the brim. This practice allows for the fuel to expand without overflowing when temperature changes occur. Fuel expands when it heats up, and keeping it below the brim provides sufficient space for this expansion. Additionally, overfilling can lead to fuel spillage, which not only wastes fuel but can also create fire hazards and environmental concerns. By stopping short of the full brim, you ensure safer handling and storage of fuel, promoting better practices for both your vessel and the surrounding environment.