tranny or rear end - Dodge Cummins Diesel Forum
2013-2018 General Discussion General Chit Chat About the 2013 model year differences 6.7L 4th generation Cummins - NO ADVERTISING - Sponsored by: StarLite Diesel

 6Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 25 (permalink) Old 04-22-2019, 09:57 PM Thread Starter
Cummins Fan
 
Brummo's Avatar
 
Join Date: May 2018
Location: IOWA
Posts: 62
Thanks: 1
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
tranny or rear end

Something I've noticed the last couple times I've towed. First was a two place trailer with two sleds from Wyoming. Pulled off to fuel up and turning left it felt like the rear was completely locked like it had posi. Or, is their something with the tranny torque converter locked?. Was pulling my boat this last weekend and felt the same a couple times. Can't really pinpoint the issue. Obviously will be taking to dealer, but am wondering if anyone else has felt anything similar.
'18 2500 13000 miles 68RFE anti spin rear.


2018 2500 CC Laramie 6.7L Cummins
To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.
Brummo is offline  
Sponsored Links
Advertisement
 
post #2 of 25 (permalink) Old 04-22-2019, 10:35 PM
Cummins Fanatic
 
Join Date: Jul 2017
Posts: 181
Thanks: 0
Thanked 11 Times in 11 Posts
iTrader Score: 0 reviews
I don't know about the Ram diff but I had a 97 Chevy 1500 4x4 that had some casting slag loose in the gear oil that would lock the rear wheels. I would have to back up to get the gears freed up and then it would run normal. This didn't show up until the truck had 90,000+ miles on the clock. Drained the rear diff and cleaned the loose slag out and put new gear oil in it and I was good to go.
Den52 is offline  
post #3 of 25 (permalink) Old 04-22-2019, 10:40 PM Thread Starter
Cummins Fan
 
Brummo's Avatar
 
Join Date: May 2018
Location: IOWA
Posts: 62
Thanks: 1
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Don't notice it when not towing..

2018 2500 CC Laramie 6.7L Cummins
To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.
Brummo is offline  
Sponsored Links
Advertisement
 
post #4 of 25 (permalink) Old 04-23-2019, 09:52 AM
Diesel Head
 
Jared Herzog's Avatar
 
Join Date: Sep 2009
Posts: 2,590
Thanks: 330
Thanked 330 Times in 278 Posts
iTrader Score: 0 reviews
Change your diff fluid. Mine did the same thing and was no longer tolerable at 8811 miles. It happened only while turning and the hotter the fluid got the worse the chatter got. I used Amsoil and Valvoline and mixed them for a thicker oil. Both were GL5. The chatter has not come back in 30,000 more miles. I just changed the second batch of oil out and will do so every 30,000 miles. The second batch had about 20,000 miles on it and looked new. I have never added any extra friction modifier. Photos:
Don’t have a dealer dump the same oil that already failed you in the truck. Change it yourself using a better oil.

Ram 14 2500 RIP 14,700 Stock. 68RFE."The Lemon"
Ram 15 3500 Dually. Stock. Aisin. N Fab wheel to wheel. Weather Tech Mats. Big D Steering Box Brace.
Jared Herzog is offline  
post #5 of 25 (permalink) Old 04-23-2019, 10:54 AM
Diesel Head
 
Ltngdrvr's Avatar
 
Join Date: Jul 2014
Location: Southeast TX
Posts: 11,609
Thanks: 17
Thanked 2,099 Times in 1,544 Posts
iTrader Score: 0 reviews
I used to get something similar on mine, but when not towing, but hot. Would grind and feel tight when backing up and turning. It was the tightness in the gear type limited slip diff. I cured mine by a fluid change with the addition of a tube of friction modifier intended for clutch type diffs. The gear type isn't supposed to need it, bit it cured the issue. I now used Mobil 1 synthetic 75w90 that has the friction modifier in it so I don't add the extra tube of it anymore.

OEM recommended diff fluid is 75w85, which is hard to find other than at the dealer and is also quite a bit more expensive than the 75w90. Since my first diff fluid change, I've always used the 75w90 with zero issues.

2015 RAM 2500 LoneStar Mega Cab CTD 2WD Air Ride PRAIRIE PEARLCOAT 02/09/2015
CCV reset/seatbelt chime disable
To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.
Ltngdrvr is online now  
The Following User Says Thank You to Ltngdrvr For This Useful Post:
LOOSEWHEEL (04-23-2019)
post #6 of 25 (permalink) Old 04-23-2019, 09:26 PM Thread Starter
Cummins Fan
 
Brummo's Avatar
 
Join Date: May 2018
Location: IOWA
Posts: 62
Thanks: 1
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Getting it looked at next week along with the recall. They said they all shudder, but they'll look at it. going to ride with a tech when I drop it off. I did feel it in reverse when I backed into the parking stall..
We'll see....

2018 2500 CC Laramie 6.7L Cummins
To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.
Brummo is offline  
post #7 of 25 (permalink) Old 04-24-2019, 11:06 AM
Diesel Head
 
Lins's Avatar
 
Join Date: Nov 2016
Location: Yellowknife, NT, Canada
Posts: 2,423
Thanks: 9
Thanked 156 Times in 154 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by Brummo View Post
Getting it looked at next week along with the recall. They said they all shudder, but they'll look at it. going to ride with a tech when I drop it off. I did feel it in reverse when I backed into the parking stall..
We'll see....
No wonder people don't like dealerships with comments like that. As @Ltngdrvr mentioned, the rear end can benefit from friction modifier, just add a few ounces yourself if the dealer does nothing about it. Many people on here have mentioned that. My guess is at best they'll change the fluid for you and say they test drove it and can't duplicate it.

2017 6.7L Ram 2500 Laramie Crew Cab Granite Crystal Sport Appearance Group, 68RFE, rear air suspension
Lins is online now  
post #8 of 25 (permalink) Old 04-24-2019, 08:56 PM Thread Starter
Cummins Fan
 
Brummo's Avatar
 
Join Date: May 2018
Location: IOWA
Posts: 62
Thanks: 1
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
What do you recommend for a friction modifier?

2018 2500 CC Laramie 6.7L Cummins
To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.
Brummo is offline  
post #9 of 25 (permalink) Old 04-24-2019, 11:04 PM
Diesel Head
 
Ltngdrvr's Avatar
 
Join Date: Jul 2014
Location: Southeast TX
Posts: 11,609
Thanks: 17
Thanked 2,099 Times in 1,544 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by Brummo View Post
What do you recommend for a friction modifier?
It's all the same stuff, just get whatever brand your local store has.

I used this before switching to the gear lube with the friction modifier already in it.

https://www.autozone.com/greases-and...tive/17352_0_0

It's easy to use the K&W tube, just cut the end off the nipple and squeeze it in the filler hole.

2015 RAM 2500 LoneStar Mega Cab CTD 2WD Air Ride PRAIRIE PEARLCOAT 02/09/2015
CCV reset/seatbelt chime disable
To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.

Last edited by Ltngdrvr; 04-24-2019 at 11:07 PM.
Ltngdrvr is online now  
post #10 of 25 (permalink) Old 05-01-2019, 07:51 PM Thread Starter
Cummins Fan
 
Brummo's Avatar
 
Join Date: May 2018
Location: IOWA
Posts: 62
Thanks: 1
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Of course you take it in and go for a test ride...won't do it.. but did it every turn getting there. Ugh.
We'll see..

2018 2500 CC Laramie 6.7L Cummins
To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.
Brummo is offline  
post #11 of 25 (permalink) Old 05-01-2019, 08:36 PM
Diesel Head
 
Ltngdrvr's Avatar
 
Join Date: Jul 2014
Location: Southeast TX
Posts: 11,609
Thanks: 17
Thanked 2,099 Times in 1,544 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by Brummo View Post
Of course you take it in and go for a test ride...won't do it.. but did it every turn getting there. Ugh.
We'll see..
Just change the gear lube yourself, not hard to do. Either use the gear lube with the friction modifier already in it or add a tube to the standard synthetic lube.

Rear cover gasket is reusable, so you only need to buy the lube.

You will also need a external torx socket for the cover bolts.
Jimmy N. likes this.

2015 RAM 2500 LoneStar Mega Cab CTD 2WD Air Ride PRAIRIE PEARLCOAT 02/09/2015
CCV reset/seatbelt chime disable
To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.
Ltngdrvr is online now  
post #12 of 25 (permalink) Old 05-01-2019, 09:14 PM
Diesel Head
 
7492's Avatar
 
Join Date: Apr 2007
Location: Monessen ,Pennsylvania
Posts: 5,550
Thanks: 443
Thanked 323 Times in 274 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by Ltngdrvr View Post
It's all the same stuff, just get whatever brand your local store has.
I will bet the sales representative for a particular brand of additive would not agree with that. His is certainly better than the others.
Jimmy N. likes this.

17 3500 Laramie CCLB loaded, minus the stupid stuff.
2011 Durango Hemi Loaded
09 Freightliner M2 33k GVW ISC 360/1050 RFO9210
7492 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Dodge Cummins Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Some Questions About Rear Axle (Dana 80) turbocruiser 94-98 Powertrain 6 04-17-2019 08:05 AM
Tranny cooler t-stat bad??? Infrared readings... swa240z 3rd Gen. Powertrain 5 08-04-2012 09:44 PM
Injector Maintenance scotchwhiskey 3rd Gen. Powertrain 86 06-22-2012 09:26 PM
fixing to install new tranny, should I install new rear main seal? cummins04.5handshaker 98.5-02 Powertrain 14 05-08-2012 12:44 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome