alright. so this has to do with my engine again. but not degreasing it. thing i am wandering is about why it is smoking some out of the exhaust. this only happens or is truely noticable when i hit high RPM's in the car. no if i remember correctly it could be either the rear main seal, head gasket, or rings taht are causing the problem. what might it be? and is it even worth fixing? or is it just easier to get a new engine