Some quick research....
Clipped from a 5 second Google search... interesting?
People also ask
Do I need gasket sealer for intake manifold?
RTV, other sealants or adhesives should not be used around the coolant or intake ports on carrier-style gaskets. The only place RTV silicone may be required is to seal the area where the ends of the intake manifold gaskets mate with the end strip seals on the block under the intake manifold or valley cover.Jul 1, 2010