I have a 2001 Pontiac GP 3.8 non sc. After reading up on this intake gasket problem I have decided to do my first UOA to see if there is any antifreeze contamination. W/ just ove 70k on the car and 3k on my current oci, I go 5k most of the time, is it too soon to check for contamination? I can take a sample by removing the filler neck and using a turkey baster so to not have to do a full oil change. What do you guys think?