Just stick with the normal gloss protective enamal and crystal clear enamal.
2k clear coat over rustoleum enamel.
For the dash i would use krylon and a clear coat over that.
Best part is it will be long lasting durable paint.
Clearcoat over some types of high.
Provides protection from rust and corrosion.
Would be interesting if someone would try it and see how it works.
7 months of sitting in the sun rain and dirt looks like the day i shot it.
More coats can be applied any time.
I ve had this happen with the rustoleum 2x stuff.
Clear coat over rustoleum ppg makes a fleet enamel about 65 a gallon w reducer.
Use a 2k clear.
At least 3 coats of your base color allow 1 day to dry between coats and wet sand with 400 to 600 grit then apply your clear coat the same amount as your base color same drying time and wet sand first with 400 to 600 grit.
I am using high performance rustoleum black glossy paint and krylon acrylic.
I put a 2k clear from spray max over my 3 96 can of rustoleum and it turned out amazing.
I am not an authority on paint and i would never claim to be but i shot a 2 part urethane clear coat over rustoleum enamel on the roof of my 49 without issue.
Do not take this as a recommendation it is strictly something i heard about and do not guarantee it.
Much better product for spraying rustoleum is a fine product but not for spraying so much enamel is a single stage type paint pre clearcoat so why clear it.
I use spray max 2k clearcoat.
Don t be like me though and use a single part clear coat gasoline dissolves it.
I used rustoleum clear coat over metalspecks which i discovered earlier the hard way that it s a laquer based paint and it worked fine.
It s about 20 a can and well worth it.
Auto body paint is easy to apply dries fast and can be buffed to a brilliant finish after the clear coat has been applied.
I think the clear coat must be more laquer based and spraying.
Dries quicker than enamel and is easier to rub out and compound in the long run.
I have heard that you can use hardware store urethane for clear coat with rustoleum.