Should I use gasket sealer on head gasket??

jtrom

Petty Officer 1st Class
Joined
Apr 21, 2010
Messages
220
I'm overhauling the powerhead on my 1974 Johnson 50. The factory manual says to put gasket sealer on the head gasket. I opened my new OMC head gasket from the package and the words "DON'T USE SEALER" are embossed on the gasket. What gives??
 

jimmbo

Supreme Mariner
Joined
May 24, 2004
Messages
13,028
The factory manual is how old? Perhaps there were changes/improvements made to the gasket so it no longer requires a sealer to be used.
 

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,195
Newer replacement gaskets already have sealer applied. So don't add anything.
 
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