
My tank is wired with the water heater element and thermostat that is shown in this forum. My question is #1, Why would the tank crack ? #2 Is there any way to fix it ? Can you put a liner of some sort around the inside of the tank cutting a hole for the heating element to fit through and sealing it. Then I just empty the pails and change the water during the process while checking on the water under the pink insulation. I cut an oval piece of pink 3/4" insulation to fit just inside the top of the tank, and then cut out holes to fit my degreasing pails into so the water does not evaporate as fast. The tank is outside sitting on top of cinder blocks to keep it off of the ground, and has not been turned off during use. I tried to seal it, replaced the thermostat and refilled the tank only to find out that it did not fix the leak. I noticed that there was a 5" crack right above the thermostat. The other day I noticed that I was loosing a lot of water quickly, and ended up burning up my thermostat because the water got too low. This stuff works great, just prep the surface as best as you can.I have been using a 100 gallon rubber stock tank for the last year as my degreasing tank which has been working fantastic. Its also great for many other kinds of leaks.

I always make sure I have a tube on hand, just in case I need it.

Drove it for many, many years, and it never leaked. I held it up in place with some pressure, since my leak was on the bottom. Take a blow dryer or a heat gun and WARM both edges/surfaces. (Alternatively, use (2) from below.) Let the A/A dry. Spray one edge with the Activator/Accelerator. Begin by saturating both edges the crack or tear with our Poly Prep. Put on a good bit of the Seal -All, and covered the Seal- All with some thin rubber. Aggressively rough the surface around the crack. Let it sit overnite to make sure the tank was dry. Had to wait a little bit for the last bit of gas to drain out. I first drained the gas tank, then I drove it up on car ramps. I was just going to put it on, till I could get another tank, but this stuff worked so great, and I never had to buy the tank. The tank was so bad, I could put my fingers through it.

I used it for a badly rusted fuel tank in a long gone 84' S-10 pickup. I have sealed a very badly rusted metal gas tank with a product called Seal-All. I'm not too sure if this would work on plastic, but I'm pretty darn sure it would.
