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In Reply to: BMW told me to run non-synthetic oil in my 95M3 posted by Joel on March 17, 2002 at 20:13:21:
You know something funny? It's odd how many assuptions for the negative people so quickly make if a behavior is observed...
but how quickly opinion changes to fact once some minor experimentation occurs.
But anyway...
Yeah some M-cars (and yes even reg. 3-series ones too) burn roughly 1qt of oil every 600-1500 miles.
I personally have tried reg. Castrol 5w-30, Mobil Synthtic 5w-30, and the Castrol "Clean Drive Blend."
And all 3 of those evaporated in my 1996 M3 at around 1qt/800 miles.
One day on a sheer fluke, I chaged the oil using Castrol Synthetic 5w-50. Note the 50.
Not my car uses 1 quart every 2000 miles.
What do you do?
Keep an oil on the oil level about every 2 weeks (as you should) and try the Castrol Synthetic.
-LuxoM3