I have discovered the source of the small leak in my fresh water tank. My tank is L-shaped and at the top of the tank in the inside of the L-angle, I found a very fine crack in the tank.
I discovered this very scientifically; I took my shop vac, hooked the hose to the blower side, made a funnel out of a 2L pop bottle, then lightly pressurized the tank. Had my wife hold the funnel and hose assembly to the fresh water inlet door and I went inside and reached through an access door to find where the air was coming from. The low pressure air worked like a charm
So my tank is the standard white plastic material. I would guess it is polyethylene or polypropylene. What glue should I use to fix this hairline crack? 2-part epoxy? PVC cement? Model airplane glue? I don't have easy access to a plastic welder either. Would prefer to just glue it shut if possible.
There's really not much room to glue another piece of patch over it. I don't think that I really need a patch; the crack isn't even visible to the eye. But you can feel air coming through it. The leak was about a drop every 15 seconds, but I lost probably 10 gallons over a weekend and it's not good for the floor/belly pan. I want to fuse the plastic shut.
I am fortunate in where the leak is located. It is relatively easy to get at. I just need to find out what the right glue is for this. Any help would be appreciated.