Auto Trans Fluid Change

rking117 · 03-13-2014, 12:21 PM

Ok, I have a question for those fluid enthusiast out there. I am looking to change the Trans and Diff fluid and i and looking to use the best fluid for each part. I know that the best fluid for the manual transmission is the Redline ATF-D4. I want to know what fluid i can use in my auto transmission that will be better than the BMW stuff and give smooth shifting like the Redline does for the Manual.

Also I know that for the 1 series either 128, 135 or M you can use Castrol SAF-XJ+FM for the differential but I am not sure if this would be compatible with the E89.

Any thoughts?

jparnes1 · 03-14-2014, 05:41 AM

If you go to the redline site there's a filter that can show what oil to use for various applications in your specific car. I used redline 75W-90 in the diff. Can't help you with the tranny as I have an MT.

03-13-2014, 12:21 PM	#1
rking117 Lieutenant Colonel 118 Rep 1,668 Posts Drives: Z4 3.0i & 320i Join Date: Aug 2012 Location: USA iTrader: (0)	Auto Trans Fluid Change Ok, I have a question for those fluid enthusiast out there. I am looking to change the Trans and Diff fluid and i and looking to use the best fluid for each part. I know that the best fluid for the manual transmission is the Redline ATF-D4. I want to know what fluid i can use in my auto transmission that will be better than the BMW stuff and give smooth shifting like the Redline does for the Manual. Also I know that for the 1 series either 128, 135 or M you can use Castrol SAF-XJ+FM for the differential but I am not sure if this would be compatible with the E89. Any thoughts? __________________ Enjoying an E89 Z4, F30 320i and Fiat Abarth // E85 Z4 (sold), E82 128i (sold), Fiat Pop 500 (sold)
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03-14-2014, 05:41 AM	#2
jparnes1 Colonel 243 Rep 2,387 Posts Drives: 2016 340i, 2012 Z4 35i Join Date: Jan 2010 Location: NY iTrader: (1)	If you go to the redline site there's a filter that can show what oil to use for various applications in your specific car. I used redline 75W-90 in the diff. Can't help you with the tranny as I have an MT. __________________ 2016 340i XDrive, EBII/black, 6 MT, M Sport, Track Handling, Cold Weather, Tech, Lighting, Driver Assistance Plus. 2012 Z4 35i, ED 2/24/2012, Melbourne Red Metallic, Black Leather, Carbon Trim, 6MT, M Sport, CW, PP, PS, NAV, CA.
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