The oil outlet of the motorcycle fuel tank switch is still a little higher than the bottom of the fuel tank. The oil outlet is not the lowest point, and the inside and bottom of the diamond leopard fuel tank are not completely flat, so no matter how you put it, you can't put any gasoline out. If you want to put it more thoroughly, you can remove the fuel tank switch from the bottom of the fuel tank and shake the fuel tank sideways repeatedly, which will be cleaner. Usually the rest will evaporate in a few days.