Gas tank leaking

:badass: Ok this truck is old rusty and I paid 300$ for it. The major problem is a leak from somewhere on top of the gas tank. Everyone i got a estimate from says they need to drop the tank and replace either it and/or the lines. This will come to 600-800$ in parts and labor. Not what i want. I need to know if there is a compound that i can just spray up there (like leak ender 2000 or something) that will stop the fuel from leaking at least for one winter.

I read on these forums that it is easier to jack up the bed than lower the tank. Check that out as it may save you time and money. The tanks are plastic so they don't repair well.