Recent Topics
ACDelco X66P
by OldEuroCarLover
08/26/16 12:07 AM
FL910S C&P, 4,000 miles
by cb4017
08/26/16 12:02 AM
Mobil 1 Full Synthetic $3.99 AR Menards
by John_K
08/25/16 10:32 PM
Causes of steering wheel shudder
by buck91
08/25/16 10:14 PM
Brand new Focus ST...
by Striker
08/25/16 09:55 PM
Chevy Volt bad idea for BITOG members!
by kohnen
08/25/16 09:22 PM
Looking for oil suggestion Chevy Express 3500 6.0L
by Goofball1205
08/25/16 08:38 PM
What ATF? 2004 Toyota Sequoia 4WD
by ShadowSix
08/25/16 08:35 PM
Tundra steering wheel
by RN89
08/25/16 08:11 PM
98-02 Corolla and Oil Consumption
by mmorri16
08/25/16 08:10 PM
How does fuel dilution affect HTHS viscosity?
by HKPolice
08/25/16 07:58 PM
Volkswagen bets big on EV(Electric Vehicle)
by HTSS_TR
08/25/16 07:50 PM
Newest Members
sledhead1, AtillatheHunk, Goofball1205, Djlmedic, BigHoss256
58926 Registered Users
Who's Online
25 registered (bbhero, ct12555, Duke, ag_ghost, Ducked, Bandito440, 1 invisible), 815 Guests and 30 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
58926 Members
66 Forums
253568 Topics
4162397 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#2764815 - 10/06/12 02:01 PM BMW 530i differential fluid
rainman49 Offline


Registered: 11/04/03
Posts: 425
Loc: Alabama
Need some advice. BMW guru Mike Miller uses Red Line 75w-90 in his vehicles, but I've read that the fluid doesn't last nearly as long as the BMW fill, which I understand is Castrol SAF-XO. Land Rover sells the SAF-XO oil as part # LRN7591 for $25 a quart at the dealership nearby or I can order it for $20 a quart online. With shipping, it's a wash on prices. What say ye, Red Line or LRN7591?
_________________________
'11 BMW 528i - BMW 5w-30
'99 Volvo S70 - QS 5w-40
'01 F250 5.4L - MC 5w-30
'02 Kaw ATV 650 - M1 TDT 5w-40
'06 Scag Fr. Z - M1 5w-40, 15w-50 tran.

Top
#2764830 - 10/06/12 02:16 PM Re: BMW 530i differential fluid [Re: rainman49]
Quattro Pete Offline


Registered: 10/30/02
Posts: 31976
Loc: Great Lakes
Are you talking about the rear diff? In my '02, I replaced the OEM fluid with Redline 75w-90 at around 38K miles. Then I did another change at 70K miles with Lubro Moly 75w-90. Haven't really noticed any difference with any of them.
_________________________
'02 530i (Edge HM 10W-40)
'15 Q5 3.0T (Edge 5W-40)

Top
#2764879 - 10/06/12 03:08 PM Re: BMW 530i differential fluid [Re: rainman49]
JHZR2 Offline



Registered: 12/14/02
Posts: 38387
Loc: New Jersey
Redline fluids protect, Im sure, but they never seemed to maintain feel from experience in my 91 318i.

Examples: 4.10 LSD in the car - always had a bit of a whine on the highway. Redline (75w-90 and w-140) would make it go away for a little bit, but it would slowly come back in time. Moving to Specialty Formulations diff fluid fixed it and it has never come back.

MT, specified for ATF fill. Redline MTF would feel real good at the start, but give it about a years use and it would get much harder to engage into first gear in the cold, and sitting with clutch in, shifter in gear, there was a lot of noise from the MT. Switching to Amsoil MTF 5w-30 type made it go away and has stayed far more consistent.

So Im not saying that redline stuff is bad, I just think it is geared towards track and enthusiast use where the miles wont be high and the change-out will be often.

Now, is XO or XJ the right diff fluid for your car?

I dont have an issue going with XO, but would also consider Amsoil SVG in the 90 or 110 versions (or if XJ is required, then 140), and would also consider M1 right off the shelf. We have done well with M1 and RP gear oils in various diffs that have very high (>200k) mileage.

Top
#2764887 - 10/06/12 03:24 PM Re: BMW 530i differential fluid [Re: rainman49]
dparm Offline


Registered: 04/19/10
Posts: 13031
Loc: Chicago, IL
I have always been impressed with the feel of Motul Gear 300 (75w90 GL4/5) in my Audi's manual trans. Also used it in the rear diff.

The 222 VI really contributed to this when it was cold, I would say. Factory trans fill was Castrol TAF-X which made things a bit notchy, and we had SAF-XO in back.
_________________________
2011 BMW M3 sedan ZCP

Top
#2765762 - 10/07/12 03:28 PM Re: BMW 530i differential fluid [Re: rainman49]
rainman49 Offline


Registered: 11/04/03
Posts: 425
Loc: Alabama
Yes, Quattro Pete, I'm talking about the rear diff. Here's a thread on a BMW forum http://www.bimmerfest.com/forums/showthread.php?t=587665

The word must have gotten around around the Land Rover gear oil because the price has doubled. Now the cheapest is $14 a liter at parts.com


Edited by rainman49 (10/07/12 03:28 PM)
_________________________
'11 BMW 528i - BMW 5w-30
'99 Volvo S70 - QS 5w-40
'01 F250 5.4L - MC 5w-30
'02 Kaw ATV 650 - M1 TDT 5w-40
'06 Scag Fr. Z - M1 5w-40, 15w-50 tran.

Top