I have never used a fuel antifreeze before, but I started to think about it after seeing a story about it on the news. It's -1 degrees here right now. I always thought that premium gas has enough alcohol in it to absorb any water/moisture in the fuel, making fuel system antifreeze unnecessary.
Anybody use this stuff?

 

A few years ago I was having a car problem of some sort, I honestly can't recall what it was, but it was in winter. My dad recommended that next time I fill up to put a half bottle of HEET in the tank, and I think that cleared it up. Maybe just coincidence who knows.

BTW unless its gasohol, and says so on the pump, it wont have any alcohol in it. Michigan stopped selling gasohol like 10 years ago. Not sure what other states still sell it.

 

I don't really see a reason to use any of that. We had a few -10 days here the past few years and no problems with the car at all. Just a gimmick, like radiator cleaner.