The original Rover tanks were not just steel - although I'm not exactly sure what the protective coating was.
Years ago I thought they were galvanised, but I think Tin plated is more likely as the tank was soldered to the bash plate that came with it.
And tin plated obviously much thicker than a baked bean can.
Also I think that there is a reaction problem between zinc and diesel fuel that means galvanised is unsuitable.
Whatever Rover used they were good for about thirty years before they rotted out.
You won't get that from a Britpart replica
