Can you drill the bolts out or drill two new holes right beside the old ones and go right through into the tank? If so, reach inside and push a pair of new bolts through with a little silicone gasket sealer on the heads. If I were doing this, I'd try to braze or tack-weld a piece of coat hangar wire to the two heads to keep the bolts from spinning.
Install the nuts with a little "Spray White Lube" from the Chrysler dealer. Other places have the same stuff but that's the one I'm familiar with. It's a lithium-based grease that will guarantee those nuts will come off easily the next time. Coat the bolt threads too when you're done and ready to reinstall the tank.
Friday, February 17th, 2012 AT 10:51 PM