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Use of dry gas

I bought some gas line anti-freeze at Valu Home Center containing Methyl Alcohol. Its been 0 degrees here for day so I put some in my Rav and totally ruined the gas tank and at the same time put some in a '04 Buick which nothing happened. I only drove old cars, am now finding out new cars are different.


  • edited February 2009
    Why do you believe it damaged your gas tank? About the only thing I can think of is you had a fair amount of water in the tank and not too much gasoline. If that is the case, all you need do is to fill the tank with fresh gas and it should improve. Next tank full add a can of water absorber (HEET) and by the end of that tank full everything should be fine.

    Why did you add whatever you added to the tank?

    BTW I have never heard of "gas anti-freeze" I am guessing it was a treatment like HEET used to absorb the water in the tank and run it through the engine. It you have a lot of water the engine will get rough and may even stop. Gas does not freeze, only the water in the tank. You should not have any water in the tank so normally you don't need to add anything to the gas that comes out of the pump.
  • edited February 2009
    Joseph; if you park in a heated garage in the winter with a partially filled tank, the moist air that gets into the tank causes condensation. Enough cycles of this and you have enough water to foul up the fuel system. If you do not fill the tank For the last 30 years I have been putting "gasline antifreeze" in my tank to avoid this problem, as well as keeping the tank relatively full.

    Here Walmart sells it in small bottles called Super Tech gasline antifreeze, and it's likely isopropyl alcohol, which absorbs water.
  • edited February 2009
    1. My car broke down on the thruway, towed to dealer and the dealer said the tank was totally useless and it had white powdery stuff in it, they had to replace it and the gas lines. 2. I don't have use of a garage.
  • edited February 2009
    The dry gas did not cause the problem with your fuel tank. Chances are that there was another underlying problem.
  • edited February 2009
    Do you think I just got some bad gasoline, I only go to Sunoco because of the 4% off using the credit card?
  • edited February 2009
    Methyl alcohol is corrosive as hell and should never be used as a dry gas. Instead use a dry gas that contains isoprophyl alcohol. The white powdery stuff they found was the methyl alcohol corroding the gas tank.

  • edited February 2009
    I believe that fresh gasoline containing 10% ethanol absorbs enough residual water and therefore one probably doesn't need additional water absorber.
  • edited February 2009
    Then why does Valu Home Center sell it? I learned a very expensive lesson.
  • edited February 2009
    Well I know that now. But why is my Buick still running????
  • edited February 2009
    For the last 30 years I have been putting "gasline antifreeze" in my tank to avoid this problem,

    30 Years ago it was a bigger problem. I believe you will find most if not all gasoline has a water absorber already in it.

    Could you explain exactly what you mean by "gasline antifreeze" Gasoline does not freeze in any temperature commonly found on earth, Do you mean a water absorber, usually alcohol based substance that co-mingles with the water and the gasoline to allow it to mix with the gasoline and not cause problems?
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