What fluid for g56 - 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

 4Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 27 (permalink) Old 05-14-2019, 11:24 PM Thread Starter
Cummins Fan
 
akhr's Avatar
 
Join Date: Oct 2017
Posts: 57
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
What fluid for g56

So I recently bought a new to me truck. 2017 3500 with a g56 manual transmission. Just wanted some opinions on what fluid to put into the transmission. So far I’ve narrowed my options to
Mobil Delvac Syn Transmission 50 vs Triax Synergy Gear SAE 50 Full Synthetic
The Triax is about $30 a gallon less then the mobile and offers more protection per the manufacture. Does anyone have experience with Triax fluid in a g56. My buddy is running it in his nv5600 and says it’s great.

akhr is offline  
Sponsored Links
Advertisement
 
post #2 of 27 (permalink) Old 05-14-2019, 11:35 PM
Diesel Head
 
K9Kodi's Avatar
 
Join Date: Dec 2011
Posts: 4,651
Thanks: 9
Thanked 676 Times in 478 Posts
iTrader Score: 0 reviews
Do your research, I’d run anything but atf4 haha. I’m gonna run a manual tranny gear oil when I do my clutch

--2015 2500, Crew Cab, Long Bed, 4x4, G56, Maximum Steel
- To Do List, 6" suspension,37" tires,4.56 Gears
--2006 2500 4x4 4 door long bed auto, 8" BDS, 37s
K9Kodi is offline  
post #3 of 27 (permalink) Old 05-14-2019, 11:45 PM
Diesel Head
 
dillonjm's Avatar
 
Join Date: Jun 2009
Location: Wichita Falls, TX
Posts: 2,422
Thanks: 69
Thanked 316 Times in 257 Posts
Garage
iTrader Score: 5 reviews
To be honest the stock fluid is fine.

Iíve run that and Mobil Delvac 50.

Advantages of the Delvac is slightly quieter operation with a solid flywheel clutch. Plus itís the recommended fluid from Mercedes who makes the transmission.

Advantages of the ATF is smoother shifting cold. The shift difference is negligible when warmed up.

I have no experience with the other fluid. Just realize NV5600 to G56 is apples to oranges. Completely different transmissions.


To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.

16 3500 SRW RCLB G56 4x4- Thuren/Carli/Fox - 285 75/18 Cooper AT3s; FTE / Aero Turbine / ARP / Anarchy / Valair / Pusher / GDP

11 SRT8 Challenger M6 - Corsa; 295 Nittos


To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.
dillonjm is offline  
Sponsored Links
Advertisement
 
post #4 of 27 (permalink) Old 05-15-2019, 10:03 AM
Diesel Head
 
Danderson's Avatar
 
Join Date: Feb 2007
Location: San Diego
Posts: 9,680
Thanks: 446
Thanked 954 Times in 851 Posts
iTrader Score: 1 reviews
Delvac 50 was too stiff for me. After converting the clutch the trans sounded like it had marbles inside.
I switched to Amsoil 75-90 MTG. I haven't tried the others aside from the factory fill.

'07 2500 SLT,5.9,Regcab.,G-56,4wd,Northstar TC800 popup 24/7. SBC OKHD. Dynatrac freespins and bj's. Synergy HD steering. Suspension mutt courtesy of Kore, Carli and Thuren.
Danderson is offline  
post #5 of 27 (permalink) Old 05-15-2019, 08:38 PM
Cummins Fanatic
 
YABUDDY's Avatar
 
Join Date: Nov 2013
Location: Western USA
Posts: 107
Thanks: 25
Thanked 23 Times in 20 Posts
iTrader Score: 0 reviews
When I had my 2010 3500 with the g56 I used what Mercedes-Benz recommended for the g56 there spec is 235.41 75w85 I used castrol syntrans 75w85 it meets Mercedes spec and it worked great with no gear rollover noise when cold or hard shifting it was a big improvement over the atf that came in the transmission. I would stay away from any boutique oil go with a oil that meets the Mercedes-Benz spec after all I believe the g56 is a Mercedes transmission.
Danderson likes this.

Wifeís 16 pearl white 3500 68rfe 4.10 dual wheel club cab 4x4 Laramie.
Mine 17 black pearl limited 3500 Aisin 4.10 dual wheel club cab 4x4
Work 18 silver tradesmen 3500 club cab Aisin 3.42 4x4
YABUDDY is online now  
post #6 of 27 (permalink) Old 05-15-2019, 09:01 PM
Cummins Fanatic
 
YABUDDY's Avatar
 
Join Date: Nov 2013
Location: Western USA
Posts: 107
Thanks: 25
Thanked 23 Times in 20 Posts
iTrader Score: 0 reviews
I donít know if this will work but here is the Mercedes-Benz oil specification page

https://bevo.mercedes-benz.com/bevol...hbegriff=235.4

Wifeís 16 pearl white 3500 68rfe 4.10 dual wheel club cab 4x4 Laramie.
Mine 17 black pearl limited 3500 Aisin 4.10 dual wheel club cab 4x4
Work 18 silver tradesmen 3500 club cab Aisin 3.42 4x4
YABUDDY is online now  
post #7 of 27 (permalink) Old 05-16-2019, 09:41 PM Thread Starter
Cummins Fan
 
akhr's Avatar
 
Join Date: Oct 2017
Posts: 57
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Thanks for all the reply’s. Now I need to figure out which one is best for heavy hauling. This truck will be loaded around 26k lbs for most of its life. I bought a pto cover with inlet and outlet ports and a pump that can run for hours without burning up. Going to add a cooler with fan and remote filter. What is “to stiff shifting”? I’m most worried about keeping the trans alive and well.
akhr is offline  
post #8 of 27 (permalink) Old 05-16-2019, 11:59 PM Thread Starter
Cummins Fan
 
akhr's Avatar
 
Join Date: Oct 2017
Posts: 57
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by YABUDDY View Post
When I had my 2010 3500 with the g56 I used what Mercedes-Benz recommended for the g56 there spec is 235.41 75w85 I used castrol syntrans 75w85 it meets Mercedes spec and it worked great with no gear rollover noise when cold or hard shifting it was a big improvement over the atf that came in the transmission. I would stay away from any boutique oil go with a oil that meets the Mercedes-Benz spec after all I believe the g56 is a Mercedes transmission.
Considering using the Castro’s syntrans 75w85. Just wondering where it says 235.41 is for the g56? Thanks
akhr is offline  
post #9 of 27 (permalink) Old 05-18-2019, 04:30 PM Thread Starter
Cummins Fan
 
akhr's Avatar
 
Join Date: Oct 2017
Posts: 57
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
@ YABUDDY
Where did you buy the Castrol Syntrans 75W-80. I’ve tried searching but everything I found is coming from Germany or Poland. Thanks
akhr is offline  
post #10 of 27 (permalink) Old 05-18-2019, 08:05 PM
Cummins Fanatic
 
Join Date: Feb 2016
Posts: 146
Thanks: 1
Thanked 6 Times in 6 Posts
iTrader Score: 0 reviews
What technically is the stock fluid? I'm assuming ATF but is it full synthetic or some special blend. If I wanted to stay stock in terms of the overall type of fluid but also wanted to upgrade the quality would Mobil 1 Full Synthetic ATF be okay? How much are people putting in to the G56 and are there any advisable tricks to getting more in there like there is with the NV4500 and removing the shift tower to get a gulp more in above the fill plug? Thanks as always.
turbocruiser is offline  
post #11 of 27 (permalink) Old 05-18-2019, 08:22 PM
Diesel Head
 
dillonjm's Avatar
 
Join Date: Jun 2009
Location: Wichita Falls, TX
Posts: 2,422
Thanks: 69
Thanked 316 Times in 257 Posts
Garage
iTrader Score: 5 reviews
Ram calls for ATF+4.

I fill mine through the shift tower. Itís just easier.


To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.

16 3500 SRW RCLB G56 4x4- Thuren/Carli/Fox - 285 75/18 Cooper AT3s; FTE / Aero Turbine / ARP / Anarchy / Valair / Pusher / GDP

11 SRT8 Challenger M6 - Corsa; 295 Nittos


To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.
dillonjm is offline  
post #12 of 27 (permalink) Old 05-18-2019, 08:37 PM
Cummins Fanatic
 
Join Date: Feb 2016
Posts: 146
Thanks: 1
Thanked 6 Times in 6 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by dillonjm View Post
Ram calls for ATF+4.

I fill mine through the shift tower. It’s just easier.
Thanks, how much fluid are you adding total, how often do you change the transmission fluid and are there any gaskets and seals that should be replaced when removing the shift tower? Thanks Again.
turbocruiser 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
Looking for advice for friend w/ 06 Fireman02 3rd Gen. Powertrain 63 12-05-2016 12:02 AM
2012 Auto Transmission Fluid Change strobels 4th Gen Powertrain 5 10-08-2016 02:26 AM
Fluid Changes Sprice69 4th Gen Powertrain 8 07-01-2016 09:39 PM
Need help truck shutting down 242ls 2013-2018 General Discussion 8 05-30-2016 01:55 PM
Any fluid dynamic engineers out there? duluth141m7 3rd Gen. Powertrain 3 06-08-2011 12:49 AM

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