Thanks Tim for all that info. But you didn't answer my question. I just wanted to know if they are fuel proof. I am not trying to have a '40' point finish. I will save my SIG dope for that. Just want to know if anyone has used the 'Hardware Store' lacquer paints.
You're probably not getting an answer because no one knows.
What contests do you go to where you get a 40 point finish?
The non-metallic colors of Rustoleum Gloss Protective Enamel, in both the quart can and the spray-bomb, is fuel proof in my experience. I'm told you should wait two weeks after painting before you slosh fuel around; I've always taken that advice and I've had no problems. There's a lot of folks who report using it with good success. If you have spray equipment getting it by the quart is way cheaper, assuming that you can use up the can.
I took two planes to the Salem, OR contest this past weekend. They are painted with Rustoleum on Monocoat, and they got 17 and 15 appearance points, respectively. So you can do OK with Rustoleum, at least at a local contest.
I have heard, but have not tested myself, that Dupli-Color gloss clear from the auto parts store is fuel proof. Also Wheel Bright clear. Perry Rose, who occasionally gets on this forum, is a big fan of Dupli-Color spray-bombs.
But I dunno about the specific paints that you mention. If you really want to use one, get a can or two, spray a test patch or two, and dribble some raw fuel on it. In spite of all the good things I had heard about Rustoleum that's what I did before I used it.