Oil vapor from -oil filler cap?
Have not looked at this in years, so just checking.

E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
Once the rings and cylinder walls have become friendly with each other, figure on no more than one or two CFM of positive displacement at idle. The ‘mist’ you’re witnessing at the filler cap is normal discharge from under our cam/valve cover.
If you haven’t already done so, fit a catch can in the PCV system to help keep spent crankcase hydrocarbons from migrating into the intake tract.





