Best headgasket?

[SloGN]

clean clean and clean. I use the cometics dry except for rtv around the water jackets and oil drain back corners. I have use the copper stuff and still had a little weepage of oil. If it's a high boost motor your gonna see some small weepage. nature of the beast!

 

[Slow91z]

Mine are installed dry (if they are new, copper spray if they are being reused) and I've not had em leak water or oil.