Our 1968 Ford Mustang Fuel Tank was so badly rusted we had no choice but to replace it with a new one. After a call to Amazon.com UPS brought us a new steel tank and sending unit. Here is how we prepped and installed the new tank.
We started by removing all the mounting bolts front inside the trunk. Then we cleaned off all the old sealant on the mounting flange.
After a good cleaning with some lacquer thinner and finally some wax and grease remover we sprayed the flange with some epoxy paint.
3M makes a great products for sealing the tank. I used their “strip calk”. It is amazing how many uses you will find for this stuff. It is also sometimes called “Dumb Dumb”
When you lay out the sealant make sure all the mounting holes are surrounded to prevent any vapors from coming up into the truck.
Ford did not paint the tanks when the cars were built but I think it is a good idea to paint them with some epoxy rust preventing paint.
Our old tank was undercoated but it is better to use a catalyzed bed liner as it is more durable.
We specifically used a two part bed liner product to coat the 1968 Ford Mustang Fuel Tank. Here are links to the products featured in this post.