RE: Is Rustroleum fuel proof?
Instead of the usual "some colors are, some aren't" replies, I think it would be more constructive to list the colors that worked for us.
Flat black, yellow and red are fuel resistant. I have these on a plane with 10% nitro content fuel and I've had no gumminess issues. No clear coat.
(on another note, Krylon Acrylic clear spray was not fuel resistant for me - it became all gummy and difficult to clean after a few flights)