What's a good coating for exhaust manifolds???

I used Eastwood on a couple of projects probably 20 years or so ago.... It's a really thin material and I didn't have an oven to bake it in so that created some challenges but made it work. Atleast 4 years after doing the work it was still on the Manifolds of both cars but lost contact with them after that. If I had to paint manifolds again that's what I would use...

JW