differential fluid change

zsapphire7 · 12-11-2008, 06:45 PM

I can see a drain plug that will be on the bottom of the diff but as for the fill plug all I can see is one that has something press fit into it. I dont think i can remove the fill plug because of that. How do you guys change the diff fluid since there is only the drain plug?

dAng! E90 · 04-08-2012, 11:59 AM

I hate to

this really old thread. But i am in the same boat now. I want to change my diff fluid but have never had a car with only a drain plug. How am I supposed to drain and fill with new fluid. I know BMW says this is lifetime fluid but I don't buy into that crap.

AlanAZ · 04-08-2012, 03:06 PM

It only has a fill plug. Take a look at the DIY in that section.

bimmertt · 04-08-2012, 06:33 PM

you need a transfer pump to pump out the old fluid and to pump in the new fluid.

742 · 04-08-2012, 08:41 PM

Quote:

Originally Posted by bimmertt

you need a transfer pump to pump out the old fluid and to pump in the new fluid.

You can also siphon it out and fill it by using a funnel/tubing (like an IV). Both are simple, but take some time.

xXANCHORMONXx · 04-09-2012, 02:17 PM

Just get tubing the same size as the threaded portion, then use a kragen fluid pump

12-11-2008, 06:45 PM	#1
zsapphire7 Colonel 103 Rep 2,368 Posts Drives: 08 e92 M3 Join Date: Oct 2007 Location: SF Bay Area iTrader: (21)	differential fluid change I can see a drain plug that will be on the bottom of the diff but as for the fill plug all I can see is one that has something press fit into it. I dont think i can remove the fill plug because of that. How do you guys change the diff fluid since there is only the drain plug?
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04-08-2012, 11:59 AM	#2
dAng! E90 The bigger they are... 18 Rep 264 Posts Drives: Jet Black '07 335i Join Date: Dec 2011 Location: Pelham, AL iTrader: (0)	I hate to this really old thread. But i am in the same boat now. I want to change my diff fluid but have never had a car with only a drain plug. How am I supposed to drain and fill with new fluid. I know BMW says this is lifetime fluid but I don't buy into that crap. __________________ Tom Williams BMW Service Advisor '07 335i Sport 219M Wheels, MMW CF Lip, Shadowline Taillights, Vishnu Procede, BMS DCI, BMS OCC, Aasco LW Flywheel, South Bend Clutch, Turner 90mm Studs, Stoptech pads rotors and lines, BMS LED Tag Lights, BMS Clutch Stop, BMS Clutch Non-Delay Valve, ACS Style Rear Glass Spoiler
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04-08-2012, 03:06 PM	#3
AlanAZ Captain 40 Rep 818 Posts Drives: E90 325i sport manual Join Date: Aug 2009 Location: Scottsdale, AZ iTrader: (4)	It only has a fill plug. Take a look at the DIY in that section.
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04-08-2012, 06:33 PM	#4
bimmertt Lieutenant Colonel 92 Rep 1,794 Posts Drives: 2007 e92 335i Join Date: Nov 2008 Location: Earth iTrader: (7)	you need a transfer pump to pump out the old fluid and to pump in the new fluid.
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04-09-2012, 02:17 PM	#6
xXANCHORMONXx New Member 0 Rep 5 Posts Drives: EVO Join Date: Apr 2012 Location: Bay Area iTrader: (0)	Just get tubing the same size as the threaded portion, then use a kragen fluid pump
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