I've had good results with Bilt Hamber Hydrate-80 for rusty petrol tanks.
Bilt Hamber Hydrate-80
The read-up looks good. I’ll add it to the maybe pile.
@pdlouche started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
I've had good results with Bilt Hamber Hydrate-80 for rusty petrol tanks.