[shark92587]

I have replaced many head gaskets on all different makes and models. I have used copper coat only on the budget jobs where we did not send the heads to get resurfaced. I have never re-used a head gasket, so I am not sure what to say about that, but basically, I haven't used copper coat in years, it is not needed or recommended if you make sure the heads and block is flat- with a straight edge. No more than .003" is a general rule, or if in doubt, you are best to send the heads to a macine shop and get them resurfaced, replace the head bolts, new gaskets, and torque properly. If you do that, you won't have any issues and won't have to wonder about copper coating the gaskets.

-Josh