Not sure where to post this question? Exhaust manifold paint?

Look at it this way............what are the relative temperatures that each paint is rated for, go with the one that withstands more heat.......clean well prepped surface makes all the difference in the world.

As an added bonus, if it turns out the BBQ paint withstands heat better.....it'll smell like hot sausage/peppers and onions every time you fire it up:rofl::rofl: