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      11-29-2012, 12:38 PM   #12
dcat151
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Wales
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Drives: 2006 330i 6MT ZSP/ZPP/ZCW
Join Date: Nov 2009
Location: Gainesville, GA

iTrader: (1)

I change my tranny fluid and diff fluid every 30,000 miles. It's probably overkill, but I feel a difference in the way the car drives after the change, and I plan on keeping the car a long time. I use Royal Purple and think it works great.