Jump to content
  • Welcome To Mopar1973Man.Com

    We can see that your guest and been lurking about. When you register on the Mopar1973Man.Com site you'll be able to interact with all the other members. This is the most friendliest Cummins forum you'll ever join. Take the time right now and  REGISTER  on the Mopar1973Man.Com this will open up many more options and functions on the website. Everyone is very friendly and helpful just ask questions and everyone will help you out the best they can. 

Sign in to follow this  
jlwelding

G56 Trans

Recommended Posts

A friend wants me to order Amsoil 50-w trans fluid for his 2015 G56 trans. all I see is ATF being ran. Should he do 5o-w fluid?

Share this post


Link to post
Share on other sites
16 hours ago, jlwelding said:

A friend wants me to order Amsoil 50-w trans fluid for his 2015 G56 trans. all I see is ATF being ran. Should he do 5o-w fluid?

 

 

The proper Amsoil GL-4 fluid for the G56 is the MTG 75w-90 manual transmission fluid. 

 

http://www.amsoil.com/shop/by-product/transmission-fluid/manual/manual-transmission-and-transaxle-gear-lube-75w-90/?code=MTGQT-EA

 

From the research I have done it's the closest to the Mercedes OEM fluid as we can find right now. I have sold it to several G56 owners with excellent results. 

 

 

 

Don't have him run the syncromesh MTF. Syncromesh is not a GL-4 fluid. 

 

Share this post


Link to post
Share on other sites

Now he's ordering some coolers to run on the trans. This all started yesterday when he used my temp gun to check trans temp after hauling a lite 4 ton load of fertilizer. the PTO plates were 200 degrees. Thanks Guys

Share this post


Link to post
Share on other sites
13 hours ago, AH64ID said:

 

 

The proper Amsoil GL-4 fluid for the G56 is the MTG 75w-90 manual transmission fluid. 

 

http://www.amsoil.com/shop/by-product/transmission-fluid/manual/manual-transmission-and-transaxle-gear-lube-75w-90/?code=MTGQT-EA

 

From the research I have done it's the closest to the Mercedes OEM fluid as we can find right now. I have sold it to several G56 owners with excellent results. 

 

 

 

Don't have him run the syncromesh MTF. Syncromesh is not a GL-4 fluid. 

 

^^^^ This 100%!! I love the way mine shift when it's cold and when it's hot. I just need to get around to buying a temp gauge so I know summer hauling temperatures. 

Share this post


Link to post
Share on other sites

Forgive me if I'm wrong.  But Mercedes recommends a 50W fluid.  The closest obtainable fluid to their spec is a Mobile Delvac 50 (SAE 50).  However It's fairly thick and doesn't shift very well, especially cold.

 

 

I'm personally thinking on trying a redline product.

 

screenshot_40.png

 

I'm currently running the CD-50.  I've hauled 14k trailer weight running 65 mph and all sorts of other bullshitery and the highest I've seen was 160°F oil temp.  At some point I'll be hauling a lot of weight at low speeds, I'm curious to see how it does then.  

Edited by Cowboy

Share this post


Link to post
Share on other sites

MB calls for spec 4 different specs. 235.1 for temperate zones, 235.12 for all zones but temperate, or 235.13 and/or 235.41 for all zones. 

 

235.1 is a GL-4 80wt oil

235.12 is a GL-4 140wt oil

235.13 is a GL-4 SAE 50wt oil. 

235.41 is a GL-4 75w-90 oil

 

So it looks like GL-4 is what it calls for. The Mobiltrans SHC DC is the only fluid that met 235.13. It's been discontinued and very little is known about it. I am not sure if it was a straight SAE 50wt or not. 

 

Mobil Delvac 50 is a MT-1 rated oil that claims it can be used on GL1-4 but it doesn't carry the GL-4 rating. MT-1 is a non-syncromesh manual trans rating. 

 

Personally I'd run a GL-4 and not a MT-1 if I owned a G56. 

 

I have read several reports of Delvac 50 being difficult in the winter. This isn't surprising given it's MT-1 and straight SAE50 ratings. I have no clue how it became so popular.. must be the herd mentality. It's not difficult to find the specs from MB and that points to GL-4 across the board. 

 

People are also using Delvac 50 in the NV4500 which also clearly calls for a GL-4 :doh:

 

 

 

  • Like 1

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

×
×
  • Create New...