2008 Pontiac G5 2.2 Ecotec I changed the valve cover gasket today since it has been weeping for quite some time now (years). This vehicle sits around a lot now since it's a second vehicle. This is the first time the valve cover has been off the vehicle. I've used various brands of synthetic oil it's whole life, did a few changes with valvoline nextgen conventional years ago. OEM and Fram Extra Guard and Fram Ultra oil filters. I typically change the oil at 5,000 miles or thereabouts. Still on the original timing chain and it's quiet as a mouse and no startup rattle. Enjoy!