| | RE: How fast does gas evaporate? Overnight???
Without doing the math, knowing the outside temperature and looking up vapor pressures, etc., I'd say "no" this time of the year. 100+ degree weather, maybe. . . but probably not. By the time the gas is half gone it should be a lot darker and smell a lot different as the light components of the gasoline would have evaporated out.
Is that the case?
I suspect someone is messing with you.
2002 Sea Hunt 212 Yamaha 200 HPDI