What kills the JB Weld is the Ehtanol or Methanol in most of todays gasoline. So I guess it depends on where you live in the states.and whats in your pump gas.....I think California is at 15% Ethanol and its the Ethanol that will soften JB Weld and most other epoxies rather quickly. If your running race gas, which most blends don't have Ethanol or Methanol you'll probably be fine. I believe Diesel fuel and aviation gas contain no Ethanol or Methanol and are rather benign to most epoxies.
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