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Axle fluid Ram 1500 #4665518
02/14/18 07:53 AM
02/14/18 07:53 AM
Joined: May 2008
Posts: 19
New Brunswick, Canada
2001SE Offline OP
2001SE  Offline OP
Joined: May 2008
Posts: 19
New Brunswick, Canada
I have a 2014 Ram 1500 Sport 4X4 and want to change the axle fluid (I'm at 60 000KM). Want to go with Amsoil severe gear 75w90 for the front and 75w140 for the rear. Only thing manual says 75w85 for the front, is using the Amsoil 75w90 OK? Also it says to add Mopar limited-slip additive. Is there an alternative, or is the mopar the way to go?

For capacity Amsoil says 1 quart front and 2 quarts for the rear is this accurate?

Thanks

Last edited by 2001SE; 02/14/18 07:53 AM.
Re: Axle fluid Ram 1500 [Re: 2001SE] #4665526
02/14/18 08:04 AM
02/14/18 08:04 AM
Joined: Dec 2013
Posts: 2,099
socal
barkingspider Offline
barkingspider  Offline
Joined: Dec 2013
Posts: 2,099
socal
Using any 75w90 will work fine, amsoil is good but costs more. Check the correct weight for the rear. I would use 75w140 only if it is oem weight


06 Cadillac Escalade Ext
17 Cadillac ATS (wife)
05 Toyota Camry (daughter)
11 GMC Canyon off-road (daily)
Re: Axle fluid Ram 1500 [Re: 2001SE] #4665530
02/14/18 08:13 AM
02/14/18 08:13 AM
Joined: May 2008
Posts: 19
New Brunswick, Canada
2001SE Offline OP
2001SE  Offline OP
Joined: May 2008
Posts: 19
New Brunswick, Canada
Yes manual calls for 75w140 for the rear, it is LSD...

Re: Axle fluid Ram 1500 [Re: 2001SE] #4665538
02/14/18 08:20 AM
02/14/18 08:20 AM
Joined: Sep 2010
Posts: 7,597
Planet Earth
2015_PSD Offline
2015_PSD  Offline
Joined: Sep 2010
Posts: 7,597
Planet Earth
Though there are other oils which can be chosen, Amsoil Severe Gear is arguably the best on the market. I would choose 75W-110 for the front axle (which is the upper viscosity that 75W-90 used to be before the J300 tables were updated) and 75W-140 in the rear. Amsoil can easily go 100K and beyond based upon my use and UOA's.


PS...happy birthday!

Re: Axle fluid Ram 1500 [Re: 2015_PSD] #4665546
02/14/18 08:28 AM
02/14/18 08:28 AM
Joined: May 2008
Posts: 19
New Brunswick, Canada
2001SE Offline OP
2001SE  Offline OP
Joined: May 2008
Posts: 19
New Brunswick, Canada
Originally Posted By: 2015_PSD
Though there are other oils which can be chosen, Amsoil Severe Gear is arguably the best on the market. I would choose 75W-110 for the front axle (which is the upper viscosity that 75W-90 used to be before the J300 tables were updated) and 75W-140 in the rear. Amsoil can easily go 100K and beyond based upon my use and UOA's.


PS...happy birthday!


Thanks for the birthday wishes

Can you elaborate for the 75W110???

Re: Axle fluid Ram 1500 [Re: 2001SE] #4665572
02/14/18 08:48 AM
02/14/18 08:48 AM
Joined: Sep 2010
Posts: 7,597
Planet Earth
2015_PSD Offline
2015_PSD  Offline
Joined: Sep 2010
Posts: 7,597
Planet Earth
Originally Posted By: 2001SE
Can you elaborate for the 75W110???
From what I understand, when the SAE J306 tables (a typo in my OP, it is J306 and not J300) were updated, the minimum and maximum kinematic viscosity ([email protected]) was adjusted and 75W-110 falls into the upper viscosity range that 75W-90 used to have before the adjustment. Pablo and Molekule can elaborate in more detail--PM one of them.

Re: Axle fluid Ram 1500 [Re: 2001SE] #4665897
02/14/18 02:18 PM
02/14/18 02:18 PM
Joined: Jun 2004
Posts: 2,684
South Carolina
bmwtechguy Offline
bmwtechguy  Offline
Joined: Jun 2004
Posts: 2,684
South Carolina
Yes, use the OEM limited slip additive if you can. In my experience it has been better than the Amsoil. The Ford stuff is the best overall from what I have used.

Re: Axle fluid Ram 1500 [Re: 2001SE] #4665900
02/14/18 02:21 PM
02/14/18 02:21 PM
Joined: Jun 2004
Posts: 2,684
South Carolina
bmwtechguy Offline
bmwtechguy  Offline
Joined: Jun 2004
Posts: 2,684
South Carolina
Yes, use the OEM limited slip additive if you can. In my experience it works better than the Amsoil. The Ford limited slip stuff is the best overall from what I have used. And the Amsoil SVG 75W-90 is closer to the OEM's recommended 75W-85 than the Amsoil 75W-110 is, FWIW.

Re: Axle fluid Ram 1500 [Re: 2001SE] #4667487
02/16/18 07:36 AM
02/16/18 07:36 AM
Joined: May 2008
Posts: 19
New Brunswick, Canada
2001SE Offline OP
2001SE  Offline OP
Joined: May 2008
Posts: 19
New Brunswick, Canada
I am going to go with Amsoil severe gear 75w90 for the front and 75w140 in the rear... Now for the transfer case, I have the BW 44-44 case with the auto 4x4 option, Amsoil says to use the Signature Series Multi-Vehicle Synthetic Automatic Transmission Fluid is that a good choice?

Thanks again!

Re: Axle fluid Ram 1500 [Re: 2001SE] #4667888
02/16/18 02:06 PM
02/16/18 02:06 PM
Joined: Oct 2006
Posts: 1,900
Oshawa, Ont. Canada
irv Offline
irv  Offline
Joined: Oct 2006
Posts: 1,900
Oshawa, Ont. Canada
https://www.bobistheoilguy.com/forums/ub...orn#Post4613084

I doubt your diffs are different than mine? Read your manual however as I believe it is 2 or almost 2 quarts for the front and roughly 1 1/2 for the rear.

Mobil has the LS additive right in it or you have to purchase the bottle that read LS on the front. I am leaning towards Amsoil myself but haven't mind up my mind yet?


2017 Chevy Impala 3.6 L.
2013 Ram 5.7 L Hemi Bighorn QC 4x4
2008 Chevy Malibu 2.4 L Ecotec
Pennzoil Platinum and/or Pennzoil Ultra Platinum in all 3.
Re: Axle fluid Ram 1500 [Re: 2001SE] #4667918
02/16/18 02:43 PM
02/16/18 02:43 PM
Joined: Oct 2006
Posts: 1,900
Oshawa, Ont. Canada
irv Offline
irv  Offline
Joined: Oct 2006
Posts: 1,900
Oshawa, Ont. Canada
Originally Posted By: 2001SE
I am going to go with Amsoil severe gear 75w90 for the front and 75w140 in the rear... Now for the transfer case, I have the BW 44-44 case with the auto 4x4 option, Amsoil says to use the Signature Series Multi-Vehicle Synthetic Automatic Transmission Fluid is that a good choice?

Thanks again!


Another one for you.
https://www.bobistheoilguy.com/forums/ub...flu#Post4646933


2017 Chevy Impala 3.6 L.
2013 Ram 5.7 L Hemi Bighorn QC 4x4
2008 Chevy Malibu 2.4 L Ecotec
Pennzoil Platinum and/or Pennzoil Ultra Platinum in all 3.
Re: Axle fluid Ram 1500 [Re: 2001SE] #4667998
02/16/18 04:00 PM
02/16/18 04:00 PM
Joined: Feb 2013
Posts: 3,383
Central Virginia
Silverado12 Offline
Silverado12  Offline
Joined: Feb 2013
Posts: 3,383
Central Virginia
FWIW my Challenger growls and "chatters" w/o the additive even w/synthetic oil.


12 Chevy Silverado ext. cab LS, 2WD 4.3 auto
18 Mustang GT 5.0 auto
07 Harley Dyna Street Bob 96 c.i. 6 sp.
00 Mustang GT auto
Re: Axle fluid Ram 1500 [Re: Silverado12] #4675008
02/23/18 01:55 AM
02/23/18 01:55 AM
Joined: Jun 2012
Posts: 1,780
USA
oldhp Offline
oldhp  Offline
Joined: Jun 2012
Posts: 1,780
USA
Originally Posted By: Silverado12
FWIW my Challenger growls and "chatters" w/o the additive even w/synthetic oil.


I use Red Line 75W90 in the rear gear of my '16 Challenger R/T 6 speed......quiet as church mouse.


2018 RAM 1500 3.6/8 speed.
2017 Jeep Sahara Unlimited 3.6
"U kan't fixe it......if'n it ain't broke."
Re: Axle fluid Ram 1500 [Re: 2001SE] #4675015
02/23/18 02:31 AM
02/23/18 02:31 AM
Joined: Oct 2014
Posts: 2,719
San Antonio, TX
Nyogtha Offline
Nyogtha  Offline
Joined: Oct 2014
Posts: 2,719
San Antonio, TX
My 2012 Ram Big Horn 4X4 specs 75W-90 for the front axle in one place you look (printed OM) and 75W-85 in another place you look (electronic OM).

I'm convinced the 75W-85 is a Fiat thing while 75W-90 was a Daimler thing. I replaced the front axle gear oil at 33K miles after inspecting it and finding the level low. I used 1 qt then AAP brand 75W-90 synthetic + 0.5 qt Super Tech 75W-90 synthetic blend to top off and have had zero problems. I plan to replace that with 75W-90 Castrol Syntrax at 64K miles.


"No matter how paranoid you are you're not paranoid enough. Tell the truth. Reach as many people as you can with it. That's your weapon." - Susanne Modeski, aka "Holly" to The Lone Gunmen

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