I have patched many tanks--but I dont think its worth it anymore,it always leaks again in short order,either in another spot or where you fixed it.I've used fiberglass cloth and resin,tiger hair(long strand fiberglass body filler),many so called "Gas Tank Leak Sealers"and J-B weld,the J-B seems to work the best and last the longest,but 6 months or a year is all I ever got from a patched tank--I have had tanks soldered or brazed at a body shop before,the owner shot his CO2 fire extinguisher into the tank after flushing it out with water and used a torch on it--it held for about a year.An old timer showed me how to solder a penny to a leaky tank in my vw beetle years ago,he simply heated the penny up and fluxed it and put a puddle of solder on it,and pressed it firmly against the already sanded and cleaned tank--it stuck like magic and lasted a long time-(long enough for me to toss a rod through the block! /forums/images/graemlins/ignore.gif).But I'm getting too old to be yanking leaky tanks in and out--I'd rather spend a hundred bucks and know all that 2 dollar a gallon liquid gold isnt dripping on the ground,its much easier to do it once and be done with it,and much safer--you wont have to worry about people flicking their cigarrette butts at your truck,or gas ruining the asphalt in your driveway. /forums/images/graemlins/crazy.gif
I have used a sheet metal screw with a rubber faucet washer to stop a small pinhole leak while on a road trip--the soap trick works too,bar soap that is--my brother used 3M masking tape once in desparation on a trip to stop a seam leak--atfer the tank was below the leakeage level he applied several layers,and never filled it more than 1/2 a tank the rest of the trip--we pulled the tank out after getting home,the tape was practically welded to the tank!--I was amazed--when I saw him put masking tape on it,I was like yea,that'll work! /forums/images/graemlins/rolleyes.gif /forums/images/graemlins/rolleyes.gif /forums/images/graemlins/ignore.gif