Join Date: Mar 2009
Location: Fort Worth, Texas
My tank wasn't rusted but the gas that was left in it had boiled down and basically carmelized. I guess that was a good thing since it stuck to the inside of the tank and prevented it from rusting. That stuff is tough to get out, and if you put fresh gas in the tank, some of the carmel will dissolve in the gas but when it goes through the carbs will harden back up when the air hits it.
I used Westleys Bleach Wite (tire whitewall cleaner) and it quickly dissolved the carmel mess and was easy to clean up, (water cleanup). It even beat lacquer thinner which was the only thing I had found up to that point that would have an effect on the carmel.