Car is an 2003 Buick century with the 3.1. I replaced the Intake gaskets (with fel-pro revised aluminum ones) at 200k and the car currently has 210k. Oil cap has a yellow residue on it after driving or running for a while. In the video you can see when I rev it it is spraying in the valve cover. Intake manifold was torqued to spec and thread lock was applied. Oil doesn't seem to have coolant in it nor does it smell like its burning any. In general the car runs great. Any ideas?