An oil sample was pulled this weekend to examine impact of stacked tunes with water/methanol injection. This oil was Mobil 1 5w-40 ESP and had ~6700 mls on it. Seems pretty good.
2011 335d Sport Package/Cold Weather Package
2004 Ram Cummins with lots-o-mods
1990 YJ Repowered with modified Cummins B3.3T