Sealant on exhaust/turbo gaskets?

[gerard]

Would it be a bad idea to use some sort of sealant on the exhaust
gaskets on the MC engine? I'm talking about the gaskets between head and
manifold and those between manifold and turbo. Nothing in the Bentley so
I assume no need for it, just tighten everything down properly.

I was thinking if it'd be a good idea to get some of that Loctite
"copper" high-temp sealant.

G.