Recent Topics
Bill Cosby's sex assault case going to trial
by Mr Nice
12 minutes 10 seconds ago
This is one reason I prefer to do my own oil
by SirTanon
59 minutes 56 seconds ago
Recent discovery of SatbiliTrack failure Mode
by MolaKule
Today at 01:11 PM
Costco Insurance discountn going away?
by stockrex
Today at 12:56 PM
4 Wix Oil filters and 1 Mazda OEM AF (skyactiv)
by badtlc
Today at 12:48 PM
FYI, At&t Implements data caps today
by badtlc
Today at 12:12 PM
Top Tier Gasoline = only 5 miles more per tank?
by Hyde244
Today at 11:45 AM
Thoughts on buying a car with a rebuilt title?
by 7055
Today at 09:54 AM
bought used honda prelude sh, which motor oil
by h22rider
Today at 09:38 AM
REVIVE a 3 YEAR stored/maltreated battery?
by SumpChump
Today at 09:35 AM
5.0 Mustang & Napa Synthetic
by Camprunner
Today at 09:24 AM
Castrol Magnatec 5w-20 Observation
by AirgunSavant
Today at 09:11 AM
Newest Members
WeekendWarrior, emily, lex73, showstopr30, any_user
57966 Registered Users
Who's Online
91 registered (1JZ_E46, 69GTX, ag_ghost, 87sammy, alarmguy, adamrc, 9 invisible), 1996 Guests and 134 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
57966 Members
66 Forums
249347 Topics
4081131 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Page 1 of 2 1 2 >
Topic Options
#3460765 - 08/20/14 09:14 PM 2014 Silverado: now using 75w-85?? Amsoil question
zuluplus30 Offline


Registered: 11/23/13
Posts: 227
Loc: Fly-Over Country
Wife's 2014 Silverado just rolled 5k miles. I usually do a flush of the front and rear diffs and transfer case at this mileage for peace of mind. Apparently GM in a quest for CAFE standards is now using a proprietary 75w-85 GL-5 synthetic rear end fluid as opposed to the old standard 75w-90 grape juice. Any body know if the rear ends are carryovers from the previous years? I always use Amsoil SVG in both front and rears of my previous GM half tons. Should I stick with the 75w-85 GM fluid? Only other 75w-85 I can find is Redline but it's GL-4 so that a no go.
_________________________


Top
#3460778 - 08/20/14 09:25 PM Re: 2014 Silverado: now using 75w-85?? Amsoil question [Re: zuluplus30]
01_celica_gt Offline


Registered: 07/29/13
Posts: 1751
Loc: St. Louis, MO
your wife has a truck? she is bad[censored]


Edited by 01_celica_gt (08/20/14 09:25 PM)
_________________________
Red/Black 01 Celica GT 1ZZ-FED(Rebuilt @ 211/144) @ 211/145k
Red 02 Corolla S 1ZZ-FED(Rebuilt @ 140k) @ 141k
All Autos!

Top
#3460784 - 08/20/14 09:27 PM Re: 2014 Silverado: now using 75w-85?? Amsoil question [Re: 01_celica_gt]
zuluplus30 Offline


Registered: 11/23/13
Posts: 227
Loc: Fly-Over Country
Lol she's a country girl. Nothing hotter than a country girl driving a killer truck. It's worth the price of admission.
_________________________


Top
#3460806 - 08/20/14 09:42 PM Re: 2014 Silverado: now using 75w-85?? Amsoil question [Re: zuluplus30]
01_celica_gt Offline


Registered: 07/29/13
Posts: 1751
Loc: St. Louis, MO
that is awesome, cooler then a guy driving a truck.
lol i couldn't image my wife in a truck, she is only 5 feet tall...
But since getting her car she has become a somewhat of a bad[censored] driver though.
_________________________
Red/Black 01 Celica GT 1ZZ-FED(Rebuilt @ 211/144) @ 211/145k
Red 02 Corolla S 1ZZ-FED(Rebuilt @ 140k) @ 141k
All Autos!

Top
#3460808 - 08/20/14 09:43 PM Re: 2014 Silverado: now using 75w-85?? Amsoil question [Re: zuluplus30]
Greasymechtech Offline


Registered: 07/11/14
Posts: 1544
Loc: Paradise of Florida
I use 75w90 in place of 75w85.
Price OE fluid at the dealer and tell them where to shove....

I'd use the Amsoil.
_________________________
At what point should a lurker start posting :-)

Top
#3460827 - 08/20/14 10:14 PM Re: 2014 Silverado: now using 75w-85?? Amsoil question [Re: zuluplus30]
zrxkawboy Offline


Registered: 11/30/04
Posts: 1459
Loc: SD
I'd use a quality syn 75W90.
_________________________
"Think of all the Ford owners who will someday want an automobile." John Dodge


Top
#3460837 - 08/20/14 10:31 PM Re: 2014 Silverado: now using 75w-85?? Amsoil question [Re: zuluplus30]
147_Grain Offline


Registered: 03/11/13
Posts: 1940
Loc: USA
Amsoil Severe Gear 75W-90 will likely equal or outperform the factory fill.

Top
#3460867 - 08/20/14 11:20 PM Re: 2014 Silverado: now using 75w-85?? Amsoil question [Re: zuluplus30]
oldhp Offline


Registered: 06/28/12
Posts: 1169
Loc: Southern Illinois
I changed to RedLine 75W90 gear oil, guess what happened to MPG? Nothing.
_________________________
2014 RAM Express 3.6/8 speed work truck.
2012 Equinox 2.4-Wife's Ride


Top
#3460868 - 08/20/14 11:21 PM Re: 2014 Silverado: now using 75w-85?? Amsoil question [Re: zuluplus30]
barkingspider Offline


Registered: 12/22/13
Posts: 1068
Loc: socal
I would use OEM until the truck is out of warranty.
_________________________
04 Chevy Silverado
13 BMW 328i (wife)
05 Toyota Camry
02 Chevy Prizm (beater)

Top
#3460874 - 08/20/14 11:43 PM Re: 2014 Silverado: now using 75w-85?? Amsoil question [Re: zuluplus30]
901Memphis Offline


Registered: 08/14/10
Posts: 10686
Loc: Northern Kentucky
Redline 75w90 is superior to the Gm stuff.
_________________________
2002 Buick Century 125k - Built 4T65e(Maxlife) - M1 0w40 /Fram Ultra XG 3387A
1998 Nissan Altima 335k - 5MT - M1 HM 5w30/Fram Ultra XG7317+MOS+ATP 205

Top
#3460974 - 08/21/14 06:33 AM Re: 2014 Silverado: now using 75w-85?? Amsoil question [Re: 01_celica_gt]
beanoil Offline


Registered: 10/17/04
Posts: 2241
Loc: Midwest, Illinois
Originally Posted By: 01_celica_gt
that is awesome, cooler then a guy driving a truck.
lol i couldn't image my wife in a truck, she is only 5 feet tall...
But since getting her car she has become a somewhat of a bad[censored] driver though.

OT, but my wife is 5'1" and she climbs right on up into the F350, drives to the storage area, hooks up the TT, and backs it into whatever campground she chooses. Now that is pretty BA, IMO. Back on topic, a syn 75w90 should do just fine.
_________________________
beanoil: Tough under heat, real dirty afterwards.

Top
#3461642 - 08/21/14 06:21 PM Re: 2014 Silverado: now using 75w-85?? Amsoil question [Re: 01_celica_gt]
jk_636 Online   content


Registered: 08/03/14
Posts: 1707
Loc: Kentucky
Am I wrong in thinking that 75w-85 just seems a little light for a pickup? Especially if you plan on towing with it? The rear differential in my truck and others that I have looked at always called for a 75w-140 or something similar in the rear. As for the fluid, Amsoil Severe Gear or Royal Purple Max Gear would do the trick. thumbsup
_________________________
2006 Dodge Ram 1500 4.7 [Mobil 1 0w30+ PuroSyn, P1 or Fram Ultra]

2012 Ford Escape 3.0 [Royal Purple 5w20 + PuroSyn, R.P. or Fram Ulra]

Top
#3461666 - 08/21/14 06:41 PM Re: 2014 Silverado: now using 75w-85?? Amsoil question [Re: jk_636]
MolaKule Offline


Registered: 06/05/02
Posts: 17016
Loc: Iowegia - USA
Originally Posted By: jk_636
Am I wrong in thinking that 75w-85 just seems a little light for a pickup? As for the fluid, Amsoil Severe Gear or Royal Purple Max Gear would do the trick. thumbsup


If the gear lube has the proper GL-5 additive package (which I would assume it does), I don't see it as too thin.

New teeth hardening methods and tooth finishes allow a slightly thinner fluid.

A 75W85 is primarily for the benefit of fleet CAFE figures.

If you don't mind a very slight mpg hit, then my recommendation is to use a synthetic or a semi-synthetic in SAE 75W110.



Edited by MolaKule (08/21/14 06:43 PM)
_________________________
"You are free to choose, but you are not free from the Consequences of your choice." Dr. Laura. smile

Top
#3462318 - 08/22/14 12:50 PM Re: 2014 Silverado: now using 75w-85?? Amsoil question [Re: zuluplus30]
Ken2 Offline


Registered: 12/02/02
Posts: 6358
Loc: Washington St.
Quote:
Am I wrong in thinking that 75w-85 just seems a little light
An aircraft carrier uses 30 wt turbine oil in its 65,000 hp gears. It all depends on the design.
_________________________
Every gun that is made, every warship launched..a theft from those who hunger and are not fed, those who are cold and not clothed.
Gen. Eisenhower


Top
#3462567 - 08/22/14 06:33 PM Re: 2014 Silverado: now using 75w-85?? Amsoil question [Re: zuluplus30]
bdleonard Offline


Registered: 08/20/03
Posts: 28
Loc: Rome, NY
FYI, Redline sells a GL-5 75w85. It is in my rear diff right now.
Redline 75w85 GL-5

Top
Page 1 of 2 1 2 >