Hi all. The Pontiac Vibe in my signature has recently started losing oil. I can't find any leaks, but there are some tiny greasy spots on top of the valve cover above where it seals (dry all around the perimeter). I've lost about a quart in 1500 miles, which is a lot for no visible leaks. I can't find any wet spots under the car or in the spark plug wells. I replaced the PCV valve this morning, but my oil level was down about a centimeter at the end of today like it has been every day for the past couple of weeks. The oil I'm using now is Pennzoil Platinum high mileage 5w-20. I topped off with about half a quart (adding a little each day) of MMO during the end of my last OCI (Magnatec 5w-30), and recently replaced my valve cover gasket. Those are the only things I can think of that have changed and could have an effect. The engine was consuming less than a quart in over 3k miles up until recently. Any ideas? Thanks in advance,
Jonas
Jonas