Getting everything cleaned up and ready to put my engine back together when I noticed this. Certainly appears that oil is seeping around the valve guides.
300 miles on these. Tea tfs 235’s with pm guides.
Just curious if anyone else has seen this happen before.

 

I've heard of this happening on other engines before, usually with aftermarket heads.

What do the intakes look like?

 

The exhaust side is pressurized, not a vacuum. I’d bolt them on and not think twice about that. Prolly just some setup grease working out of there.