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Originally Posted by TimmmyD
Do any of you "enginerds" know whether BMW's recommendation for synth substitutes for the X5 take ACEA rating into account?
This may be why they like Castrol so much (that and the HUGE markup for putting a roundel on the bottle). The only Mobil1 synths that are "ACEA A3" rated are 0W40 and 15W50. And that was prior to Mobil's reformulation into their current "long-life" variants.
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Nope. Never been called an enginenerd, either. 
I read the ACEA info online, but given that it is a trade association and lobby group to the EU, I stopped after several pages.
I always liked SAE due to their relative independence from mfgrs. I say 'relative' with tongue firmly in cheek, as I work with a heavy equipment mfgr in Illinois that populates all the local SAE chapters and standards committees focusing on heavy equipment, which causes one to question how SAE can stay independent.
Agree with all the subsequent comments on marketing of oils.
Now, for something more interesting. Can you tell us about the /5 in your picture? How long have you had it? My dad and I restored an R50/5, think it was a 1970 model, pearl white. Beautiful bike, long gone now. When we had it, it had 24,000 miles, and had never been apart.
Jeff
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2007 X3 3.0si, 6 MT, Premium, White
Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue
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