Differential Lube

[YOOPERVIC]

2005, 3500 Dodge, Cummins. Six speed standard. Two wheel drive.

NV5600 transmission.



Looking for recommendations for a good lubeoil for the differential.

Understand the 75w-140 is no longer necessary for pulling heavy

loads and that the 75w-90 will do. Would appreciate any advice or

brand recommendations. Thanks much.

 

[klenger]

I use Mobil 1 75W90.

 

[roperteacher]

Amsoil also makes a great 75/110. It is a nice go between the 75/90 and the 140... I tow heavy on weekends and daily driver during the week. Made sense to me to have a little extra for the towing and not lose MPG's during the week!:-laf

 

[Fireman]

I use Mobil 1 75w140. Still like the heavier oil.

 

[PRout]

I have noticed that TDR member Joseph Donnelly seems to like the Lucas Engineering Diff lube. Maybe he can chime in and give some input on it. Ive been meaning to ask him about it and now is a good time to discuss it. . If he doesnt pop in here you might send him a PM asking about it. He knows this stuff. .

I believe the LE lube handles sheer load stress better than most of the major brands but need better info. .

 

[HighRanger]

Amsoil Severe Gear 75w90

 

[PRout]

This may be of interest. .

Amsoil Diff Lube Question(s) - TDR Roundtable

 

[mberry]

I use Mobil 1 75w140. Still like the heavier oil.

See how you like that heavy oil at 0 degrees F! First time I experienced it I thought I left the parking brake on. :-laf

 

[Fireman]

See how you like that heavy oil at 0 degrees F! First time I experienced it I thought I left the parking brake on. :-laf

It's never been that cold here :-laf



But it is 105 today and the heavy oil is doing nicely

 

[Duluth Diesel]

AMSOIL 75W110 is what I run and recommend.



-Chuck

 

[Duluth Diesel]

This may be of interest. .



Amsoil Diff Lube Question(s) - TDR Roundtable

That is an ancient thread and much of the information and products have changed.



-Chuck