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Message: <blockquote data-quote="DFH67" data-source="post: 31165" data-attributes="member: 9303"><p>I have a 2012 Equinox with the 2.4L 4 cylinder and the ubiquitous rear main seal oil leak. I have performed the hack of drilling a hole from the head side of the intake to the outside to place a removable set screw resealed with blue thread locker to clean the pcv port of carbon once in a while. I also replaced the factory non-vented oil filler cap with a AC-Delco matching vented oil filler cap. Now then, I am pert near close to performing the task of removing the transmission to replace the oil seal. Does GM or any aftermarket offer a redesigned oil seal? Also, is it safely possible to drill a little larger of a hole in the pcv port in the head to prevent another clog up of carbon again? What do y’all think?</p></blockquote><p></p>