Last week while cleaning a bit of oil/dirt accumulation from front of heads, there was red paint on the rag!  It had some gas on it and the paint was coming off little at a time.  Wish I remembered which paint I used, but think it was Rustoleum Engine enamel.

What is a better choice?

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.