Has anyone tried using isopropyl (rubbing) alcohol as a winter antifreeze?
Some use it as a gas additive much like acetone is used...but at
~4-5 oz per 10 gallons (used along with some top lube in the gas).
Could act to avoid freezing and as a mileage booster by itself seeing as it would be a vapor when entering the intake.
Easy to find already mixed with water....

I want better mpg....