26-09-12, 11:16 AM
I used stuff called Restom. I found it on Ebay, but it's a French company that doesn't appear to have any distributors over here.
The kit consists of a degreaser to remove any petrol varnish, phosphoric acid to dissolve rust and finally, once you've got the tank clean and dry, a two part resin with which you coat the inside of the tank (just by pouring it in and tilting the tank around).
I did mine four years ago after the smell of leaking fuel led me to a rust pinhole at the bottom of the tank. It hasn't given any trouble since.
The kit consists of a degreaser to remove any petrol varnish, phosphoric acid to dissolve rust and finally, once you've got the tank clean and dry, a two part resin with which you coat the inside of the tank (just by pouring it in and tilting the tank around).
I did mine four years ago after the smell of leaking fuel led me to a rust pinhole at the bottom of the tank. It hasn't given any trouble since.