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Old 06-15-2019, 10:49 AM   #14
rotorwrench
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Join Date: Jun 2010
Location: San Antonio, Texas
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Default Re: best way to dry gas tank that is in car

Drying time is generally only a worry when there is bare steel surfaces to worry about that will corrode quickly. The alcohol that is sold to remove moisture from a fuel tank (HEET is one brand) can be used as a slosh but good old isopropyl alcohol will work just as well. Here is a good You-Tube experiment. https://www.youtube.com/watch?v=ElbgPhujl_M

The idea is to put it in quickly and slosh it good then pour it right out to get rid of the water droplets in there. The remaining isopropyl alcohol will evaporate much quicker than the water will. A person just needs to be sure there are no other additives in the alcohol that might remain after evaporation.
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