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      10-06-2012, 09:55 PM   #3
cvc 22349a

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Drives: 335i
Join Date: Sep 2007
Location: SF Bay

Posts: 2,255
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If you're using BMW recommended oil, I'd extend the drain interval instead of shortening it. 7500 is a good change interval unless you're driving at the track or hit >260d oil temps regularly. 3k would be a waste of oil and money imo.
2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD
Quaife lsd, ETS fmic, GIAC s/w, Dinan intake/exhaust/oc, KW/M3 susp, Apex Arc 8, Mich PSS