Petrol tank sealant

[Goldy]

Has anyone experience of using petrol tank sealant for lining the inside. My tank is not damaged just has surface coating of  rust. but I am interested to know if it's worth doing.

[BEAMA]

 My tank was done in 1998, (it was weeping at the hand change mount under the tank) still no leaks or lifting of sealant. I used fine stone chippings ( fish tank gravel ) gave it a good shaking ( take out you petrol filters ! )and blew it out with an air line. Make sure its dry then seal it.
It worked for me  

[Rex]

Sealant's a last resort for me; I wouldn't do it for surface rust.
What's wrong with a handful of nuts, half a gallon of paraffin and arm-ache?

[mondo]

Ive used petseal twice now and i'ts been good for me although not just surface rust as both tanks were badly corroded