Gas tank leak repair, Do they work?

Folks this is on a 1964 Ford 2000 gas tractor. Seemed to have developed a gas tank leak (believe near front, still working on locating it). Been reading up/watching a number of how to articles and videos on repairing. My question is do they really work and last (whether resealing inner lining or external patch work) or am I better off just buying new tank? Current tank 3-4
years old.
 
I've fixed a few leaking motorcycle tanks using the kit from KBS Coatings. It comes with a muriatic acid based cleaner to soak and clean the old rust out of the inside of the tank before you apply the sealant, which is epoxy based. I had one motorcycle for about 10 years after I sealed the tank and it never leaked during that time. The others I sold after 3 to 5 years and they were still fine when I sold them. You need to remove the tank from the vehicle and seal off the drain hole and fill it with the acid, and then seal the fill spout and roll it around and and let it sit upright, and then roll it around again and then let it sit some more, but upside down this time, and repeat for as long as you can. Then drain the acid out of the tank and rinse it with water and use compressed air to get as much of the water out as possible, then seal up the drain again, pour in the sealer, seal the fill neck, and roll it around some more before draining off the excess epoxy. I did about 24 hours on the acid and about 2 or 3 hours on the sealer.
 

For a one off I would buy a new tank...

I am a fan of Por-15/KBS I have fixed some rusty tanks with it. I went the extra mile with the prep. More than the instructions called for. One tank I did close to 20 years ago has developed a rust spot on the inside at the bottom. No leak yet I will not know till next year I run it from may till the first of July its parked with all the fuel ran out of it. I have not done it yet I plan to pour oil in the tank to slow/stop the rust while it sets.

I did seal a 600 tank that leaked from a solder seam as far as I know it is still holding up as its never came back.
 
Dont know if this helps but believe leak is coming from somewhere around the front bottom. Cant see source of leak but seems to be from around the weld spots that hold the front mounting bracket to tank. This ever happen to anybody else?

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I fixed a teardrop tank on an Allis-Chalmers B I restored more than 20 years ago, with gas tank sealer, and it
has been fine since with no problems. The tank was so rusty that it would not hold the liquid long enough for
it to set, so after I cleaned it thoroughly to bare metal in hot lye solution, I fiberglassed the outside with
fine fiberglass cloth and resin, just to get it to hold the sealer. After sloshing the sealer to completely
cover the inside and letting it cure, I finished the exterior after some sanding with bondo, etc, and painted
it, and it is still an invisible repair.
With all this said, I have learned a lot since then. There are businesses which specialize in rehabilitating
gas tanks, and you can send a tank to them and have it completely made good as new, at what seems a very
reasonable cost, considering. I think I would recommend that route now, but I did not know about this back
then.
 
All I can say is POR 15! I've used it on several tanks with rust and pit holes and it's sealed and held every single one of them. As long as you follow the cleaning, flushing and drying instructions, it will hold for you as long as you own the tractor. I also had one like yours with what appeared to be leaking at the welded support bar and it worked there as well.
 
All I can say is POR 15! I've used it on several tanks with rust and pit holes and it's sealed and held every single one of them. As long as you follow the cleaning, flushing and drying instructions, it will hold for you as long as you own the tractor. I also had one like yours with what appeared to be leaking at the welded support bar and it worked there as well.
 


por 15, bit expensive, life time repair, will remove paint during the prep phase... if full of pin holes might need to put a piece of duct tape over outside till it sets...

that being said... less expensive fix, jb weld.. on out side,, but 3 rules for jb weld. 1. it must be clean... 2. it must be clean, 3. it must be clean... so.. sand off any paint, dirt, grit, wash it with alcohol, dry, then apply jb weld and make sure you get it pushed into all seams, cracks, brackets, etc... repair will look a bit ugly, but can be sanded and painted when done.

Por15 used on antigue motorcycle tanks is a forever fix and done on the inside. will not peel off like redcoat and others.
 

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