Here in Western Massachusetts it can get pretty cold in winter -20F for several days on end not as cold as some of you ice state dvellers though. My truck is kept outside and we don't have the best gas here many fuel stations seem to get water in there gas and many cars get frozen gas lines. I have used that stuff called "Heat" before with good results I believe it is just isopropyl alcohol but I often wonder if I should be useing something like Seafoam that says it helps with water in the fuel? Any other opinions or continue on with the "Heat" product?