Fluid change AND Computer reset..

gbalstad · 11-27-2013, 03:34 PM

I am getting all materials required to perform an extensive fluid change, including the manual transmission, front and rear diffs, and the transfer case. My question is twofold:

1. Is it necessary to reset the computer for the transfer case? Has anyone had experience with this? If it is necessary, would you recommend a K+CAN adapter?

2. What fluids are recommended? This is what I was thinking:

Manual Transmission: Royal Purple SynchroMax

Front & Rear Diff, Transfer Case: Royal Purple 75w 90.

Thanks so much for any advice, and happy Thanksgiving!

gbalstad · 11-27-2013, 11:21 PM

Where is a reliable source for the K+CAN cable?

gbalstad · 11-28-2013, 03:49 PM

Any input would be greatly appreciated, Royal Purple, or other?

flexinator · 11-28-2013, 04:51 PM

Transfer case I would use BMW transfer case fluid, the rest is probably ok, I hear people like redline d6 for mt oil. No computer reset needed. Make sure you open the fill port before the drain plug...

WreckerX5d · 11-28-2013, 05:05 PM

Been told by a BMW master tech to use 75w-140 for diff fluid. Preferably with the friction modifier (LSD oil). I believe that's the recommended weight in alldata anyway.

Meeni · 11-28-2013, 06:03 PM

I would recommend you stick to OEM oil for diff and trans. The MT trans can probably take the spec difference, but the AT or the diff are sensitive and failure resuting from using Redline* is not unheard of.

* Redline is quality oil, so I suspect the same would hold true for other brands, its clearly an issue of out of spec application/

11-27-2013, 03:34 PM	#1
gbalstad New Member 3 Rep 23 Posts Drives: E90 325xi Join Date: Jul 2013 Location: Stillwater, MN iTrader: (0)	Fluid change AND Computer reset.. I am getting all materials required to perform an extensive fluid change, including the manual transmission, front and rear diffs, and the transfer case. My question is twofold: 1. Is it necessary to reset the computer for the transfer case? Has anyone had experience with this? If it is necessary, would you recommend a K+CAN adapter? 2. What fluids are recommended? This is what I was thinking: Manual Transmission: Royal Purple SynchroMax Front & Rear Diff, Transfer Case: Royal Purple 75w 90. Thanks so much for any advice, and happy Thanksgiving!
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11-27-2013, 11:21 PM	#2
gbalstad New Member 3 Rep 23 Posts Drives: E90 325xi Join Date: Jul 2013 Location: Stillwater, MN iTrader: (0)	Where is a reliable source for the K+CAN cable?
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11-28-2013, 03:49 PM	#3
gbalstad New Member 3 Rep 23 Posts Drives: E90 325xi Join Date: Jul 2013 Location: Stillwater, MN iTrader: (0)	Any input would be greatly appreciated, Royal Purple, or other?
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11-28-2013, 04:51 PM	#4
flexinator Captain 86 Rep 639 Posts Drives: 2011 335xi coupe Join Date: Oct 2007 Location: US iTrader: (2) Garage List 2008 335xi [0.00]	Transfer case I would use BMW transfer case fluid, the rest is probably ok, I hear people like redline d6 for mt oil. No computer reset needed. Make sure you open the fill port before the drain plug...
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11-28-2013, 05:05 PM	#5
WreckerX5d Warrant Officer 375 Rep 1,341 Posts Drives: Deezul Join Date: Oct 2010 Location: Long Island, NY iTrader: (4)	Been told by a BMW master tech to use 75w-140 for diff fluid. Preferably with the friction modifier (LSD oil). I believe that's the recommended weight in alldata anyway. __________________ Deleted, ATM I/C and tuned by B.R.R.
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11-28-2013, 06:03 PM	#6
Meeni Gateropode 329 Rep 2,848 Posts Drives: BMW 330i 06 Join Date: Apr 2012 Location: TN iTrader: (0)	I would recommend you stick to OEM oil for diff and trans. The MT trans can probably take the spec difference, but the AT or the diff are sensitive and failure resuting from using Redline* is not unheard of. * Redline is quality oil, so I suspect the same would hold true for other brands, its clearly an issue of out of spec application/
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