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It's the 3.2 stock motor for the 2000 boxster S
I did check the vacuum at the oil filler without a gauge and the vacuum was light.
I just now found the source of the oil leak, it's coming from drivers side spark plug hole closest to the firewall. I suppose that when I disconnect the hose it does not allow the crankcase to vent properly and is finding the weakest seal. This surprises me as thought it would be vented to the open air and have no pressure with it disconnected. Besides the hose did not seem to pull any vacuum anyway. Clearly I lack an understanding of how all this works. That spark plug tube was fine when I changed out the plugs a month ago.
I'll have to see about making a vacuum guage. Or maybe I can just pressurize the line from where I already have it disconnected and block off the airbox and listen for a leak
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