Oil system myths

pishta said

@RustyRatRod I though it was for heat transfer from the exhaust manifolds? I ran into a 440 with no exhaust gaskets from a motorhome.

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I don't know and didn't say what the reason was. I just know they didn't do it. I also know two like machined surfaces normally will seal, all else being equal. Up to a point, of course.