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      05-06-2022, 11:57 PM   #422
aswy6
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Drives: 2016 BMW M3
Join Date: Jan 2017
Location: Austin, TX

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Either earlier or change brand. Motul 5W40, Castrol Edge 0W40 if out of warranty.
Also, next time do TBN and TAN.
Requested TBA and TAN. What are these by the way?
TBN is your leftover additives in oil. Total Base Number.
TAN is total acidic number. It you basically oxidation.

TAN should not exceed TBN. Sometimes it is OK, but only if oils with a lot of ester is used like Redline.
Without that you really don't know state of your oil.
So in my case those numbers are looking good?
Sorry, my mistake.
I didn't see those rubrics as I was looking on phone.
Yes. This is pretty good TBN, but TAN, although below TBN could be better for LL01 oil.
Try Motul. I have seen some reports and TAN usually has excellent value.
Yep Motul is what i got in there now
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