BMW 3-Series Oil Questions

Comments

• roadburner Member Posts: 17,355

  May 2012 edited May 2012

  Here is what Blackstone said about my most recent run of Rotella T6 in my 2004 X3:
  
  Universal averages for BMW's M54 I-6 are based on about 6,400 miles on the oil. You ran this oil 8,352 miles, and wear read at or below average across the board. That's the best indication we know of that an engine is in good mechanical shape internally.
  
  The TBN was 1.7(below 1.0 is low). However, by 10,000 miles the TBN drops to 0.5-0.8. Consequently, I believe that 15,000-18,000 miles is not a safe interval for my X3 based on my UOAs. Also note that I have run LL-01 oils(M1 0W-40) as well as HDEO synthetic oils(M1 5W-40, Rotella T6 5W-40) in the X3 and they have all performed in a similar fashion.That said, 6,000 is a bit excessive; I run M1 5-30 in my Mazdaspeed 3 for 7,500 miles and I know that the turbo motor is harder on oil than the NA M54.

  Mine: 1995 318ti Club Sport; 2020 C43; 2021 Sahara 4xe 1996 Speed Triple Challenge Cup Replica Wife's: 2015 X1 xDrive28i Son's: 2009 328i; 2018 330i xDrive

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• bamckelvey Member Posts: 1

  April 2014

  i use 5/40 synthetic oil and always high quality premium gas. Runs like a top.

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