The mineral spirits thing should do the trick but it may take more than one gallon depending on how much sludge there is in the tank. I'd use one gallon at a time & check the results after each treatment.
Last edited by Tiny; 12/14/2011 4:54 PM.
Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.
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