Tank internal rust treament
 

looking inside my fuel tank there's a little surface rust on the bottom back corner is there any rust treatment's that will work with out being affected with petrol ?

Re: Tank internal rust treament
 

A phosphoric acid solution from your local hardware will do the job. Just clean with detergent and water prior to treatment.

Re: Tank internal rust treament
 

I used petseal, it worked a treat and a bloke from work used it and has had in his tank for 20yrs and no rust.