Previous owner just did the chain guide overhaul. No leaking at the valve covers. But lots of oil hanging under back of engine. Sat for 2 days in the garage and now I find oil on the floor. I ran the car for 30 min. and watched the underside and was not dripping but that oil didn't just materialize by itself. You can't see squat from where it is coming from and I hope it is not the back crank seal.
Any suggestions of where this oil is coming from?

 

Remove the rubber plug from the bottom front of the bell housing and feel inside. If there is oil there it's from either the rear main seal or the oil gallery plug just above it.

 

Probably oil galley plug. Numerous posts about it on here. I found mine was barely finger tight. Sadly, its between the engine and transmission so one or the other must come out.

 

https://www.jaguarforums.com/forum/x...l-leak-217177/

My thoughts are in post 10 with pics

 

Seems to leak over the course of a week pretty good. Does not seem to leak while you're driving. The gaskets expanding with heat ? When cold they leak?