Originally Posted by jhp027
I had a question about my girlfriend car. It won't start at all, it wont even turn over. I thought it might be a dead battery, but i talked to someone and they said the gas could be frozen? I know for a fact that she has only 1/4 tank of gas left, could it possibly freeze? Right now where she is, it 7*F and -8* with the wind chill.
Okay, first of all, frozen gas won't prevent the engine from turning over; it will only prevent it from starting (and wind chill doesn't affect inanimate objects: the car won't be any _colder_ than 7°F just because it'* sitting in a stiff wind). So your first problem is to figure out why the starter isn't turning: try recharging the battery with a good set of jumper cables, etc.
Second, it doesn't matter how _much_ gas you have, as to whether it'* going to freeze or not. What matters is whether you've got water in it. If you're always running around with a low tank _and_ parking overnight in a heated garage, you could be collecting water as condensation within the tank. Keeping a full tank of gas helps to minimize the amount of trapped air and the amount of surface area in the gas tank on which condensation can form. If you're parking the car outside all the time, you don't have the usual conditions under which condensation could form, and so you're less likely to be looking at a frozen-fuel-line problem anyway.
> Also, this guy said something about putting dry gas in the car
> to melt the frozen gas? is this correct?
Nope. If or when the lines are frozen, they're frozen; you can pour HEET in the filler neck, but nothing'* going to force it down the fuel lines to an ice blockage and thaw it for you.
Once the frozen lines _are_ thawed (if in fact that'* what the problem really is), then you can fill the tank with fresh gas and add some HEET to deal with any accumulated water in there.