Thread: Top of LIM full of oil

When I pulled off my UIM today, I was surprised to see that the 2 deep wells in the opposite corners of the LIM where the 2 hidden bolts are, were filled to the top with oil !!! I am fairly certain it was pure oil, not mixed with AF. There was no sign of a crack or blowout on the UIM where the EGR tube protrudes and no other sign of AF in the LIM. Is it possible that all of this oil was a result of seepage up the 2 bolts in these wells? If it didn't come from there, I am at a loss to figure out how all of this oil got up there...

last couple lim jobs ive done they were full like that too

If this issue is due to the PCV, can someone explain to me how the PCV can suck up this much oil? Doesn't seem to me like this is a good thing. Alll this oil then either sits there or gets ingested and burned along with the fuel/air.

I thought this was due to leaky valve cover gaskets ??? I know since i've changed mine i no longer have that problem.