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#1
10-20-2010, 10:59 AM
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sw-40 or 30?
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#2
10-20-2010, 11:28 AM
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Either 5W-30 or 5W-40 is fine. There is a tradeoff between the two, in that the 40 gives more protection at very high ambients (mas caliente que Miami), but the wider viscosity range is achieved by using additives in the oil that are not as stable, so in general the narrower range will hold its viscosity better. That said, there is really very little difference at the ambients we are talking about.
If you were pulling a loaded trailer through Death Valley, the 5w-40 would matter more.
__________________
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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#3
10-20-2010, 01:31 PM
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yea, so I went with 30. Bmw suggested the same.
Any opinions on changing it warm or cold? I like the idea of not waiting two hours, and it being thinner, but maybe I'm wrong on this one
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#4
10-20-2010, 03:09 PM
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I always change it warm, not hot. Either let it cool from hot, or warm it up from cold. I think it is important to get as much as possible out, and to carry the maximum amount of contaminants out with the oil.
__________________
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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#5
10-20-2010, 03:44 PM
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Perfect. Did it warm. Think it maters that I used mobil one?
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#6
10-20-2010, 03:50 PM
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Not as long as it was a full synthetic, with an API SM or SL rating.
__________________
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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#7
10-20-2010, 04:13 PM
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all done. Think it would be nice if maybe once you're all done with it and start her up, it just said thank you on the MID...
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#8
10-20-2010, 09:12 PM
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it does, just listen for it....
having a true connection with your vehicle is priceless!
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