optima red tops
Something is causing your PCV system to run in reverse, the hose opposite your PCV valve is allowing oil to get sucked up into your airbox, instead of allowing your crankcase to suck fresh air from the airbox. You've got a collapsed vacuum line or the small plastic orifice in one of the vacuum lines is clogged. Look for a plastic splice in one vacuum line, there'll be a small hole in it that's easily clogged.