Couple of warnings; if you leave the gas on overnight, I HIGHLY recommend taking out the plugs before starting and smelling the oil for gas. On some of my bikes, the gas gets into the cylinder head. When that happens, it can get past the rings and into the oil. Also, liquid doesn't compress. If you try to start the bike with a head full of gas, you can blow a gasket. If you take the plugs out first, excess gas will blow out the hole.