If a paint STATES ON THE LABEL that it is an acrylic, there is 95%+ chance it is fuel resistant. To be certain do a test panel, then do a raw fuel test (pour some fuel on the panel and let it sit there for 5 or 6 hours, then wipe off). If it passes the raw fuel test, then do the exhaust test. Hold the panel about 10" - 12" from the exhaust of a running engine for a tank of fuel (about 12 minutes). Make sure the exhaust is going directly on the panel (a pair of gloves is nice to keep your hands from being burnt) during the test, then let the panel sit for 5 - 6 hours before cleaning.

BTW - Not all colors of Rustoleum are fuel resistant, and the ones that are typically need 3 - 4 weeks (or longer ) of drying to develope fuel resistance.