Thread: When to Fill up
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Old 05-02-2008, 10:29 AM   #4 (permalink)
DP86
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Quote:
Originally Posted by trikkonceptz View Post
I know I have seen threads that give the best time fill up ... empty vs 1/4 etc ...

However has anyone determined whether its best to fill to half a tank all the time or refill at the half way mark? Law of averages aside, I was wondering more about gas evaporation and whether or not gas evaporates faster in a tank that is half empty with obviously more agitation or mostly full, with less room for agitation.

Thanks ...
Dont know exactly how the evaportaive emissions system works, but from a strictly theoretical standpoint, less gas in the tank will increase the vapor pressure of gaseous gas (more gas will be in vapor form in a half a tank than a full tank). From that point i guess you would have to figure out which system uses the gas more efficiently, the conventional system or the evaporative system
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