Oil all over motor ???

Lonewolf3165 said

You MUST USE A PCV!!! Breathers alone aint good enough! Seals & gaskets need negative pressure to work. Breathers only let air in. Most of the post on here with oil leaks are from people with new VCs or a fresh rebuilt engine that haven't got a PCV valve hooked up or have it hooked up incorrectly.

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Eh......Breathers are nothing more than a "controlled" hole in the valve cover, with a baffle and usually some foam to keep oil from flying out....Air can go in...air can go out, no check valve. A PCV valve IS a check valve (just shake it and listen to the ball rattle). This will only let air out (for the most part) when functioning correctly.

For what it's worth, I have had 2 breathers on my race/street car for 20 years now with no leaks (4 different engines too).