Mobil Delvac SAE 50 compatable manul trans oils???

[MolaKule]

I agree with A_Harman and others who suggested a 75W90 dedicated MTF such as Amsoil MTG or Redline MT-90.

In the post immediately above, the two oils will mix, however they are not equal in viscosity(thickness).

I think the problem is that the 17.5 cSt oil (50W) is too thick and you need to come down a notch to a 14.5 cSt MTF (75W90).

 

[zeng]

Originally Posted By: MolaKule
I think the problem is that the 17.5 cSt oil (50W) is too thick and you need to come down a notch to a 14.5 cSt.


Agree ..

 

[2009ram2500]

I did get confirmation that the Amsoil Synchromesh Transmission Fluid 5W-30 is compatible with the Mobile Delvac SAE50 so I mixed 3qts with 5qts of the Delvac50 and it works much better BUT it's still a little sticky when cold but it does shift much better.

I have also recently hard that Amsoil mtg 75w-90 GL-4 is a much better solution as it does not get thicker when it gets cold.

13.9 cSt at 100
87.6 cSt at 40

http://www.amsoil.com/shop/by-product/tr...ar-lube-75w-90/


...Still waiting for confirmation of a compatible synchro additive package for the G56 in this oil.

 

[KenO]

I dumped the junk ATF that was in a Ram 2500 I did some work on and put Pennzoil Synchromesh in. No issues to date.

 

[2009ram2500]

Originally Posted By: KenO
I dumped the junk ATF that was in a Ram 2500 I did some work on and put Pennzoil Synchromesh in. No issues to date.



I would suggest reading this thread, not to rain on your parade but I've heard that Pennsoil's lube base is not as good as the Amsoil.

http://www.cumminsforum.com/forum/3rd-gen-powertrain/1716858-g56-trans-fluid-17.html#post21877410

 

[MolaKule]

Originally Posted By: 2009ram2500

...I have also recently hard that Amsoil mtg 75w-90 GL-4 is a much better solution as it does not get thicker when it gets cold.

13.9 cSt at 100
87.6 cSt at 40

http://www.amsoil.com/shop/by-product/tr...ar-lube-75w-90/


...Still waiting for confirmation of a compatible synchro additive package for the G56 in this oil.



Yep.

Originally Posted By: MolaKule
I agree with A_Harman and others who suggested a 75W90 dedicated MTF such as Amsoil MTG or Redline MT-90.

In the post immediately above, the two oils will mix, however they are not equal in viscosity(thickness).

I think the problem is that the 17.5 cSt oil (50W) is too thick and you need to come down a notch to a 14.5 cSt MTF (75W90).