My guess is anti-seize for the header bolts.
NOOOOOO!!!!! Don't put this stuff on your header bolts!!! It is exhaust sealant, to be used at the joints. Spread a thin bead on the inside pipe, slip the parts together, then tighten the clamp. I just bought a set of Delkevic slip-ons. While the instruction were horribly incomplete, they did specifically say what was in the tube and how to use it.
NOOOOOO!!!!! Don't put this stuff on your header bolts!!! It is exhaust sealant, to be used at the joints. Spread a thin bead on the inside pipe, slip the parts together, then tighten the clamp. I just bought a set of Delkevic slip-ons. While the instruction were horribly incomplete, they did specifically say what was in the tube and how to use it.
I didn't get instructions or any paste with my slipon! Details!
Sounds like you got a raw deal.