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      03-05-2017, 05:10 PM   #24
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Drives: 2012 335i MSport
Join Date: May 2012
Location: Austin, Tx.

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Originally Posted by bbnks2 View Post
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.
Sorry, I wasn't clear. I have only I used Amsoil 5w40. I was thinking of using M1, but not now.