So I am doing the heads on my 56 olds. The old manual book says to spray pob #4 on the head gasket. What is that. Is there something I can use in place of it.
I dont believe modern head gaskets require any sealant. I did not use any when I assembled the head gaskets on my 56 Olds motor and it was fine.
good alternative available at most auto part stores http://www.permatex.com/products/pr...matex-high-tack-spray-a-gasket-sealant-detail
I use copper coat on my early Olds motors, spray and install wet was having an occasional blown gasket when installed dry haven't had a failed head gasket since even with high compression and blown setups