Bill Hirsch LINK sells what they're calling "Gas Tank Etch" which says it leaves a gray phosphate coating, so is probably just the same as Ospho. They also sell gas tank sealer. If it was me, I'd just replace the tank, unless it's not readily available.


Kevin
1951 Chevy 3100 work truck
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Photos
1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.