Sounds like you had some good stuff there Chip, and your part of the country, like mine, was known to turn out some sippin' alcohol that was the pride of the maker.
I have had some working aquaintenances that tried to be thrifty(cheap) and use rubbing alcohol instead of "gas drier" but they should have read the label.If you read the label the componant percentages are usually listed and water is the second greatest part.
To use this isopropyl alcohol in the tank would be actually ADDING water.