Before I throw in something I read today in a magazine, let me ask a question:
If I pour an ounce of gasoline on the pavement outside, then take an ounce of gasoline and put it into a glass jar with a half tightened lid on it, how much gas will be left, after evaporation comes into play, in about 10 minutes?
We should all know that the gas on the pavement would be gone. Gas in the jar, lower but still a lot left.
As I said, that's the evaporation process.
Most people don't know that most gas stations have a collapsible fuel bladders inside the underground tank. The reasoning behind this is: as the fuel is dispensed thru the pumps the collapsible bladder collapses from the top and there's less air inside the underground tank. The less air (like the glass jar in my question above) the less evaporation of the gas in the tank.
We can't do this in our vehicle gas tanks of course, but, if we only use half a tank of gas at a time before filling up, then there's less air in the tank and less evaporation taking place.
As I said, this was a magazine with this theory and their estimate was something like loosing up to a gallon of gas before you could empty the tank running around town.
Now of course if your on a trip of hundreds of miles and your going to use a tankful every couple of hours, this theory doesn't hold true, but if it takes you a week to go thru a tankful, then there's a lot of evaporation taking place.
Makes sense to me. Any thoughts??
P.S. As an afterthought, it also hurts less on the wallet filling up only half a tank.
