Is it ok to use RTV Copper along w/gasket on exhaust manifold?

[Sweet6]

Should I use RTV and a gasket? Will using both cause leaks? Or just one of them?

TIA

 

[b4black]

After blowing out three gaskets, I use nothing or just a little copper RTV.

 

[buickboy]

Copper RTV, works everytime. Just use it sparingly (1/16 thick)
Mitch