Clear polyurethane varnish over aged (2 week minimum) Rustoleum. The Minwax brand varnish comes in a spray can and a paint can. The spray is convenient.
It is fuel proof after about 24 hours.
There are several varieties, clear and amber tinted, and a variety of gloss levels, so make sure you are getting the correct product. This is NOT polycryllic water based product. It is the stinky solvent based polyurethane.
Bonus: you can coat polyurethane and Rustoleum over each other allowing for proper full cure times with no ill effects.
Phil