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      03-05-2017, 04:31 PM   #23
Lieutenant Colonel

Drives: 135i N55
Join Date: Jan 2017
Location: NY

iTrader: (0)

Originally Posted by AirbusPilot View Post
All I can tell you is the oil temp runs about 5 degrees cooler. I change it at about every 6k miles. Did not know that about the M1 new formula, just read a comparison test where it out performed the old formula.
Mobil 1 0-40 used to be slightly thicker than Castrol Edge Euro 0-40. It is now thinner. It makes sense the new formula would decrease oil temps. Problem is it does not appear to hold up well to abuse. I'd stick with LL-01 approved oils if you do anything more than use your car for commuting/fuel economy. I would drop your oil change intervals down to 4-5k max.