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bmwPower99 · 06-06-2023, 06:27 AM

I changed mine around 50k+ miles and the transfer case fluid was disgusting as was the front diff oil and zf trans oil. Rear diff oil looked like new. I don't know what a reasonable interval is for the transfer case, anything but never.

06-06-2023, 06:27 AM	#9
bmwPower99 Private First Class 19 Rep 148 Posts Drives: bmw f25 X3 35d Join Date: Jan 2021 Location: uk iTrader: (0)	I changed mine around 50k+ miles and the transfer case fluid was disgusting as was the front diff oil and zf trans oil. Rear diff oil looked like new. I don't know what a reasonable interval is for the transfer case, anything but never.
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