Copper spray on Fel-Pro head gasket?

I bought a pair of Fel-Pro PermaTorque Severe Duty head gaskets to use on my 265.

My question, should I use the copper spray on these gaskets for the best seal or install them dry? No instructions were included with them and I keep hearing both...

Thanks! Alex

 

I always put them on dry. I used the copper spray for steel shim head gaskets though.

 

I think that would completely kill the whole idea behind the Print-O-Seal material. I'd install them on a very clean and dry surface.

 

Install them dry.

 

Thanks guys! Dry they will be!

 

Ditto on installing them dry!!