Can't say much about no nitro stuff, "FAI"...buuutt the higher the nitro the more important fuel proofing is. Rustoleum is good to just about 20% nitro. I've a couple of planes sprayed years ago with restoleum enduring a life of 20%nitro. Areas of direct raw fuel contact near the cowling have rubbed paint off slowly over the years. Raw fuel will rub it off on a cloth if rubbed like it were sand paper....just don't do it..heh heh...

Don't use krylon...never drys and sticks to everything...not fuel proof...learned that one the hard way....

Another .02

hawk