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Consistency of gear lube in very cold weather #4604099
12/15/17 06:42 AM
12/15/17 06:42 AM
Joined: Mar 2008
Posts: 5,943
Michigan
ZZman Offline OP
ZZman  Offline OP
Joined: Mar 2008
Posts: 5,943
Michigan
We all know that a 0 - 5w multi-grade motor oil flows better in cold weather. We have probably watched videos where this oil is made very cold and poured out and it is very thick.

This made we wonder how thick a 75-90w gear lube must get in cold weather. Is it like frozen ice cream or butter? How the


2003 Mercury Grand Marquis. Rotella T6 Multi-Vehicle oil
2008 Sebring Hardtop convertible. Rotella T6 Multi-Vehicle oil
2006 Kawasaki Vulcan 900 LT. Amsoil Metric 10w-40
Re: Consistency of gear lube in very cold weather [Re: ZZman] #4604110
12/15/17 07:12 AM
12/15/17 07:12 AM
Joined: Dec 2011
Posts: 4,754
North Carolina
rooflessVW Online content
rooflessVW  Online Content
Joined: Dec 2011
Posts: 4,754
North Carolina


"Zed's dead baby, Zed's dead."
Re: Consistency of gear lube in very cold weather [Re: rooflessVW] #4604114
12/15/17 07:36 AM
12/15/17 07:36 AM
Joined: Mar 2008
Posts: 5,943
Michigan
ZZman Offline OP
ZZman  Offline OP
Joined: Mar 2008
Posts: 5,943
Michigan
Originally Posted By: rooflessVW



Like ice cream then?.... smile


2003 Mercury Grand Marquis. Rotella T6 Multi-Vehicle oil
2008 Sebring Hardtop convertible. Rotella T6 Multi-Vehicle oil
2006 Kawasaki Vulcan 900 LT. Amsoil Metric 10w-40
Re: Consistency of gear lube in very cold weather [Re: ZZman] #4604177
12/15/17 09:07 AM
12/15/17 09:07 AM
Joined: Dec 2005
Posts: 9,900
Upper Midwest
kschachn Offline
kschachn  Offline
Joined: Dec 2005
Posts: 9,900
Upper Midwest
Originally Posted By: ZZman
Like ice cream then?.... smile

No, read the graph.

Besides, it's not the same environment as a motor oil nor does it have the same viscosity requirements.


1994 BMW 530i, 228K
1996 Honda Accord, 263K
1999 Toyota Sienna, 400K
2000 Toyota ECHO, 271K
Re: Consistency of gear lube in very cold weather [Re: ZZman] #4604187
12/15/17 09:13 AM
12/15/17 09:13 AM
Joined: Sep 2010
Posts: 7,002
Texas
4WD Online confused
4WD  Online Confused
Joined: Sep 2010
Posts: 7,002
Texas
Does not get pumped … still requires mobility … some may have noticed the OEM’s went synthetic with gear oil long before getting behind synthetic lubes in the motor …

Re: Consistency of gear lube in very cold weather [Re: ZZman] #4604225
12/15/17 09:42 AM
12/15/17 09:42 AM
Joined: May 2009
Posts: 12,192
N.H, U.S.A.
ARCOgraphite Offline
ARCOgraphite  Offline
Joined: May 2009
Posts: 12,192
N.H, U.S.A.
Like a 10w40 to a 15w50 motor oil. Ive only trashed a diff through shock not through cold running. Though back when I had RRWD diffs with SAE90 I had a garage smile


2014 Nissan Rogue S CVT, OC#9 41392mi-QSUD10W30 + M110A CHAMP Filter; 2017 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter
Re: Consistency of gear lube in very cold weather [Re: ZZman] #4604239
12/15/17 09:54 AM
12/15/17 09:54 AM
Joined: Feb 2017
Posts: 314
NC
fenixguy Offline
fenixguy  Offline
Joined: Feb 2017
Posts: 314
NC
I'm sure this has been posted here before, but it's still fun to watch.

Gear Oil in Cold


'16 Frontier SV 4x4-PP/Nissan OEM
'08 CR-V EX AWD-Valvoline Syn MaxLife/Fram TG
'01 Civic EX-Valvoline Syn MaxLife/Fram UG
'00 Civic LX-PYB/Fram UG
Re: Consistency of gear lube in very cold weather [Re: fenixguy] #4604286
12/15/17 10:31 AM
12/15/17 10:31 AM
Joined: Mar 2008
Posts: 5,943
Michigan
ZZman Offline OP
ZZman  Offline OP
Joined: Mar 2008
Posts: 5,943
Michigan
Originally Posted By: fenixguy
I'm sure this has been posted here before, but it's still fun to watch.

Gear Oil in Cold


Cool video.... Looks like caramel.... Lol


2003 Mercury Grand Marquis. Rotella T6 Multi-Vehicle oil
2008 Sebring Hardtop convertible. Rotella T6 Multi-Vehicle oil
2006 Kawasaki Vulcan 900 LT. Amsoil Metric 10w-40
Re: Consistency of gear lube in very cold weather [Re: ARCOgraphite] #4604313
12/15/17 11:02 AM
12/15/17 11:02 AM
Joined: Sep 2010
Posts: 7,002
Texas
4WD Online confused
4WD  Online Confused
Joined: Sep 2010
Posts: 7,002
Texas
Yep … 4 speed big blocks got a few …

Re: Consistency of gear lube in very cold weather [Re: ZZman] #4604471
12/15/17 01:51 PM
12/15/17 01:51 PM
Joined: Sep 2006
Posts: 1,320
Wisconsin
Black_Thunder Offline
Black_Thunder  Offline
Joined: Sep 2006
Posts: 1,320
Wisconsin
what's weird is my vehicles i the late 90's came factory filled with either 75w90 or 75w140 synthetic.


and my Parents recently bought a 2015 Ford Escape that is spec'ed for 80w90 in the rear axle......why not 75w90?


I'd buy Callahan autoparts if I could.
Re: Consistency of gear lube in very cold weather [Re: Black_Thunder] #4604530
12/15/17 02:36 PM
12/15/17 02:36 PM
Joined: May 2009
Posts: 2,236
WA (USA)
Y_K Offline
Y_K  Offline
Joined: May 2009
Posts: 2,236
WA (USA)
Because 80W-90 is not a syn oil and perhaps they want you to have a higher viscosity at lower temperature band. Chevron Delo ESI 80W-90 is certified for 500k miles in big trucks with Dana / Meritor rear ends.


"This forum talking about 4wd systems is like when other forums talk about oil." © 2018 FlyPenFly
Re: Consistency of gear lube in very cold weather [Re: ZZman] #4604616
12/15/17 04:13 PM
12/15/17 04:13 PM
Joined: Jan 2016
Posts: 315
Cheshire, England
barryh Offline
barryh  Offline
Joined: Jan 2016
Posts: 315
Cheshire, England
I've never seen gear oil in cold weather but I've certainly felt the difference a thinner oil makes.

My BMW motorcycle has gear oil in the gearbox, shaft drive and final drive. Spinning the rear wheel by hand in neutral demonstrates there is a really substantial amount of oil drag at - 5 deg C which is my lower limit for riding. Switching from the specified mineral 80W90 to synthetic 75W90 subjectively reduced that drag by a large amount. When I graphed the oils it was a reduction from approx. 4000 cSt to 1000 cSt. That reduction in cold viscosity has to be worth having and I won't be going back to the 80W90.


Barry

1979 BMW R45 (Triple QX 5W40)
2009 Mercedes C180K (Shell Helix Ultra 5W40)

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