How much does 1 gallon of liquid gasoline displace as a vapor? The saturated vapor volume of an average gallon of liquid gasoline when fully evaporated is 160 gallons of vapor at 60° F and sea level. When you convert 1 gallon of gasoline into 160 gallons of highly combustible fuel vapor you increase your nation’s fuel supply by 16,000% (16,000% of 1 is 160). If you paid $5 for just one gallon of liquid gasoline you would actually only be paying $0.03 (3 cents) per gallon of fuel vapor.
From:
https://presscore.ca/news/how-to-con...bustible-fuel/
SO You can get a LOT of vapor....out of a gallon of gasoline.