Quote:
Originally Posted by BMWM.D.
Alright, I have an answer to our questions. The "special" oil (83 22 2 282 583) is described on the bottle as "SAF-XJ + FM Booster". So, it is the same oil with the addition of some type of extra friction modifier or "booster".
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Fair enough...I'll have a word with Castrol and see what they say.