Quote:
Originally Posted by TurnAround
...I've been on Mobil 1 5w-40 since then, and up to my 92k now.
In the last few months I've noticed that I'm burning 1 quart of oil every one thousand miles. Umm.. that seems drastic. Not good.
...But then also, I just did a search on the board here and I read a couple of posts that said do NOT use Mobil 1 because even though it says 5w-40 its actually still too thin by comparison to BMW's branded Castrol 5w-40. To the group here... do you agree with this? So like.. maybe the BMW Castrol rebranded thing isn't false after all?? I'm wondering, so maybe its indeed thicker, but also, that's the sludge build up cause as well.
Recommendations?
Thanks so much!
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That qt every thou miles is still well within BMW's 'spec', fwiw. Did you check for leaks? If none, the oil is being combusted via several possibilities.
None of us can know which is the cause, and a qt every thou would not send me to the rebuild dept.
A couple posts on Mobil1 being "too thin"? If you want some serious reading and even more opins, read the arm wrestles and tech stuff on BobTheOilGuy:
Passenger Car Motor Oil (PCMO) - Gasoline Cars/Pickups/Vans/SUVs - Bob Is The Oil Guy
I haven't memorized every poster's 'fave oil', but not many here are running 5W-40 of any brand; doesn't mean that is necessarily bad, just not a popular viscosity for E53s... Some of us run M1 0W-40, most run 5W-30 of a few brands.
You didn't mention whether or not your yellow sludge is gone...not sure I have recommendations other than maybe doing a change, (0W-40 or 5W-30), followed by a short time, 2nd 'hot change', and see how consumption is. But, you should look closely for leaks, too, imo.
Hey, another Oil Thread. ;>)
GL, mD
PS: I bet JCL, et al, the Mavens here, will have additional opins and ideas.