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      03-29-2011, 05:50 PM   #4
optimaxed
Second Lieutenant
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Drives: F31 328i, F22 M235i
Join Date: Nov 2008
Location: Home

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I've been told if you are going to change the fluid, do it sooner rather than later, i.e. <60k miles.

My BMW dealer said he has known slippage to occur because people changed the fluids at 80k miles, and some of the "worn material" had affected the transmission ...