What kind of diff fluid should i use?

turbobird14 · 08-14-2012, 10:08 PM

Hey guys,

Ive posted on here that i have some rear end noise coming from my diff and before i just go ahead and replace it, i was gonna try to change the fluid and see what happens. My question is what kind should i go with that would be the best for what im trying to accomplish. I know redline is about the best and most highly suggested, but what kind should i go with... regular, synthetic, 75w90 or something heavier... let me know! thanks!

cvc 22349a · 08-14-2012, 10:11 PM

OE or Redline 75/90NS

ozzy1 · 08-14-2012, 10:13 PM

Quote:

Originally Posted by turbobird14

Hey guys,

Ive posted on here that i have some rear end noise coming from my diff and before i just go ahead and replace it, i was gonna try to change the fluid and see what happens. My question is what kind should i go with that would be the best for what im trying to accomplish. I know redline is about the best and most highly suggested, but what kind should i go with... regular, synthetic, 75w90 or something heavier... let me know! thanks!

I used royal purple 75-140 on my xi. Very happy. Had a small leak, dont know exactly from where), went away after fluid change. Viscosity difference in old vs new fluid...

Easy diy too.

Surly73 · 08-15-2012, 08:11 AM

My votes:

Redline 75W90
Amsoil 75W90 (SVG)

I've used both in BMWs with success for over a decade.

08-14-2012, 10:08 PM	#1
turbobird14 Private 6 Rep 59 Posts Drives: 07 335i Sedan Join Date: Sep 2010 Location: Monroe, MI iTrader: (1)	What kind of diff fluid should i use? Hey guys, Ive posted on here that i have some rear end noise coming from my diff and before i just go ahead and replace it, i was gonna try to change the fluid and see what happens. My question is what kind should i go with that would be the best for what im trying to accomplish. I know redline is about the best and most highly suggested, but what kind should i go with... regular, synthetic, 75w90 or something heavier... let me know! thanks!
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08-14-2012, 10:11 PM	#2
cvc 22349a Colonel 164 Rep 2,556 Posts Drives: 335i Join Date: Sep 2007 Location: SF Bay iTrader: (11)	OE or Redline 75/90NS __________________ 2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD Quaife lsd, ETS fmic, GIAC s/w, Dinan intake/exhaust/oc, Koni/M3 susp, Apex Arc 8, Mich PSS
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08-15-2012, 08:11 AM	#4
Surly73 Lieutenant Colonel 592 Rep 1,913 Posts Drives: '11 535xi 8AT KWv3 MPE MHD xHP Join Date: May 2012 Location: Oakville, Ontario iTrader: (1)	My votes: Redline 75W90 Amsoil 75W90 (SVG) I've used both in BMWs with success for over a decade.
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