Best metal polish for places that get high heat? (exhaust)

[BlueFang08]

My exhaust is dirty as all hell and I was wondering whats a good polish to use?

[CT9A]

Ask Paul (Dr. Jones), he let me use some stuff called P244 or something like that. I used it on my wheels, my exhaust and my emblems, good shit.

[oracle]

P21S multi surface finish restorer.