Good Sam Club Open Roads Forum: Differential Lube for 2016 Ram CTD 2500
Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Tow Vehicles

Open Roads Forum  >  Tow Vehicles

 > Differential Lube for 2016 Ram CTD 2500

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 3  
Next
Ron3rd

Upland, CA USA

Senior Member

Joined: 03/22/2004

View Profile


Offline
Posted: 11/11/18 09:42am Link  |  Quote  |  Print  |  Notify Moderator

As I mentioned in my other thread, I'm getting ready to change the diff lube in by 2016 Ram 2500 and would like some recommendation on gear lube.

I was looking at Mobil 1 Synthetic that meets the Ram GL-5 spec but notice it comes in 75W-90, not 75W-85 as recommended in the manual. Is this lube OK to use?

Just curious what others are using.

Also, according to the manual I do not need a friction modifier.

Update: Actually, my manual says to use 75W-85 in one section and 75W-90 in another section

I'm 2WD so I only need to do the rear diff.


2016 6.7 CTD 2500 BIG HORN MEGA CAB
2013 Forest River 3001W Windjammer
Equilizer Hitch
Honda EU2000

"I have this plan to live forever; so far my plan is working"

ScottG

Bothell Wa.

Senior Member

Joined: 02/25/2005

View Profile


Offline
Posted: 11/11/18 10:22am Link  |  Quote  |  Print  |  Notify Moderator

Yes 75-90.
No friction modifier (your diff doesn't have a clutch)


Scott, Grace and Wesly
2003 Dodge 3500 4x4, 6 speed Cummins.
2018 Silver Fox 32A.
H0NDA eu2000i

Ron3rd

Upland, CA USA

Senior Member

Joined: 03/22/2004

View Profile


Offline
Posted: 11/11/18 10:28am Link  |  Quote  |  Print  |  Notify Moderator

Thanks Scott
What's weird is one section of my manual says to use 75W-85 and 75W-90 in another section.

Mobil 1 Synthetic OK? That's what I used in my last truck.

Vette Racer

Oklahoma

Senior Member

Joined: 03/05/2003

View Profile



Good Sam RV Club Member


Posted: 11/11/18 10:51am Link  |  Quote  |  Print  |  Notify Moderator

I have a 3500 pulling heavy so I run 75/140 severe duty. There is not much difference in the weights you mention, go with either.


KE5NCP
2016 Ram CC Dually, 2011 HitchHiker 349 RSB DA, 2018 Wrangler unlimited Rubicon


ScottG

Bothell Wa.

Senior Member

Joined: 02/25/2005

View Profile


Offline
Posted: 11/11/18 10:53am Link  |  Quote  |  Print  |  Notify Moderator

I think you may also find it says to use 75/140 someplace. If you tow heavy in the heat it's a good choice.
I often tow in the desert and use it year round.

Learjet

Louisiana

Senior Member

Joined: 02/21/2006

View Profile



Good Sam RV Club Member

Offline
Posted: 11/11/18 11:46am Link  |  Quote  |  Print  |  Notify Moderator

that is what I used Mobil 1 75w-90...no problem


2017 Ram Big Horn, DRW Long Box, 4x4, Cummins, Aisin, 3.73
2015 Wildcat 317RL, MoRryde rubber pin box, Titan Disc Brakes, Trojan T105
B&W Ram Companion

Yamaha EF2600c tri-fuel generator
Champion Model 46595- 3000/3500w


Learjet

Louisiana

Senior Member

Joined: 02/21/2006

View Profile



Good Sam RV Club Member

Offline
Posted: 11/11/18 11:48am Link  |  Quote  |  Print  |  Notify Moderator

ScottG wrote:

I think you may also find it says to use 75/140 someplace. If you tow heavy in the heat it's a good choice.
I often tow in the desert and use it year round.


That was pre AAM axle...for AAM use what the manual says or 75w-90... at the most 75w-110...I'm sure someone will chime in about Amzoil soon [emoticon]

mowermech

Billings, MT

Senior Member

Joined: 06/28/2003

View Profile


Offline
Posted: 11/11/18 11:51am Link  |  Quote  |  Print  |  Notify Moderator

I wonder if there aren't "IF/THEN" statements in your manual.
Such as:
IF the ambient temperature is this, THEN use that lubricant.
or
IF you are towing heavy loads in high heat, THEN you should use this lubricant.
or
IF you do not have a limited slip differential, THEN you do not need a friction modifier.


CM1, USN (RET)
2002 Fleetwood Southwind 32V, Ford V10
Daily Driver: '06 PT Cruiser Turbo
Toad: '05 Wrangler Unlimited
Toy: 1999 Dodge QC LWB, Cummins, Auto, 4X4
Other toys: 2 Kawasaki Brute Force 750 ATVs.
"When seconds count, help is only minutes away!"

Ron3rd

Upland, CA USA

Senior Member

Joined: 03/22/2004

View Profile


Offline
Posted: 11/11/18 01:03pm Link  |  Quote  |  Print  |  Notify Moderator

ScottG wrote:

I think you may also find it says to use 75/140 someplace. If you tow heavy in the heat it's a good choice.
I often tow in the desert and use it year round.


Yeah, they call for that weight in the 4500/5500 trucks.

Ron3rd

Upland, CA USA

Senior Member

Joined: 03/22/2004

View Profile


Offline
Posted: 11/11/18 01:05pm Link  |  Quote  |  Print  |  Notify Moderator

Learjet wrote:

that is what I used Mobil 1 75w-90...no problem


I think that's what I'm going with too, readily available at Wal Mart.

Does anyone recall how many qts it holds? Could not find that info in the manual.

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 3  
Next

Open Roads Forum  >  Tow Vehicles

 > Differential Lube for 2016 Ram CTD 2500
Search:   Advanced Search

Search only in Tow Vehicles


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:

© 2019 CWI, Inc. © 2019 Good Sam Enterprises, LLC. All Rights Reserved. | Terms of Use | PRIVACY POLICY | YOUR PRIVACY RIGHTS