Everything was done with OEM parts. I didn't see any cracks nor did my buddy when he inspected it today. I'll have him check one more time to ensure we are not missing anything obvious here.

I understand there is a valve inside this canister that keeps the oil in the filter housing from draining down. I believe this is the valve my buddy inspected to see if it was causing my start-up rattle (I'll confirm this tomorrow). Now I don't know squat about how things work inside the canister, but could this valve or anything else in the container cause excess pressure in the canister (i.e. causing the oil canister to fill up too much and create pressure that eventually seeps out? Like it's draining way too slow)?

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2010 BMW 335i
2009 Lexus GS350
2004 Comp Orange SVT Cobra Convertible