A tube of J-B Weld Professional Steel Reinforced Epoxy being applied to a rusty metal fuel tank in a workshop setting.

Is JB Weld Gasoline Proof? What You Need to Know Before You Patch

Welding isn’t always an option—especially when you’re dealing with a tiny crack in a gas tank or a leaky spot on your mower. That’s where JB Weld steps in. But before you start patching things up, let’s answer the big question: Can JB Weld actually hold up to gasoline? The short answer? Yes, but only…