I'm rebuilding '78, Johnson, 150 hp. Is it necessary to use Gasket Sealant, any where? Like Bypass Covers, Head Gaskets, Head Gasket Covers, Intake Manifold, Exhaust Cover. Thanks.
The one place you don't want to use it is on the intake manifold, Also the cyl head gasket if it says "use no sealer". I'm sure you'll get more opinions.
