Rear differential gear lube?

[Glenn54]

Has anyone used Valvoline or Mobil 1 synthetic gear lube in their differential? I have a 2019 2wd. I do tow with it some. Mopar lube is a fair amount more expensive so curious if others have tried these brands or other brands.

 

[2020Big4x4Horn]

Ran the mobil in my 3rd gen. 75w90 I believe. Never an issue. Too soon for me to look into my 5th gen.

Sent from my SM-G988U using Tapatalk

 

[c3k]

Based on the multiple reports of low filled rear diffs, I'm going to change my rear diff next week. I'll use Mobil 1 75w90, just like I did with the 2007 Hemi. (It'll give me the assurance it's correctly filled, AND it'll drain out the swarf and any other break-in contaminants.)

I have nothing against Valvoline: I've just used Mobil 1 and never been let down.

(Edited to add: I just caught that this is a in the Hemi thread, and I've got the baby diesel. My 75w90 is spec'ed for my 3.21 diff. The 3.92 should use 75w140, FWIW.)

 

[Mopar_maxi]

I run redline 75-140 in mine.

 

[UnloosedChewtoy]

I typically run Amsoil Severe Gear in the appropriate weight (whatever it says in the manual). In this case, I don't want to change the rear diff. completely after only 7500 miles, so I bought 1 quart of the Mopar stuff and will just add to it if its low. I have not towed with this truck yet, and if I do, its "towing" someone out of a ditch in the winter, or pulling a light (500-ish lbs) single axle flat bed trailer to the dump once a year with a load of stuff that is too big for the trash bins.

One nice thing is that Ram finally switched to full synthetic gear oil. Even in the late 4th gens (not sure about Ram Classics) it was regular stuff.

 

[2020GraniteBH]

Just hit 30k I'm going to change front and rear this week before a long road trip up north and back as early preventative maintenance. Going with the appropriate weight of Amsoil Severe gear. Make sure when you do this you add the friction additive if required for your application.

 

[Drewster]

Just a reminder to everyone that the proper gear lube is dependent on your differential. 3.21/3.55 diffs use 75W-90, while 3.92 differentials use 75W-140. Both require additive/ friction modifier if you have the limited slip.

 

[PapaMap]

Hey guys . This is the only feed I found about the rear end. I have the 2019 bighorn 1500 4x4 with the 5.7 and the 3.2 gear. I turned off traction control when doing some doughnuts . And there is a metal on metal noise its loud and sound like its comming from rear end . All stock except upgrading to goodyear wrangler duratrac tires . Any ideas. Thanks

 

[PapaMap]

Hey guys . This is the only feed I found about the rear end. I have the 2019 bighorn 1500 4x4 with the 5.7 and the 3.2 gear. I turned off traction control when doing some doughnuts . And there is a metal on metal noise its loud and sound like its comming from rear end . All stock except upgrading to goodyear wrangler duratrac tires . Any ideas. Thanks

Also I'm at 42k miles

 

[GKIII]

Hey guys . This is the only feed I found about the rear end. I have the 2019 bighorn 1500 4x4 with the 5.7 and the 3.2 gear. I turned off traction control when doing some doughnuts . And there is a metal on metal noise its loud and sound like its comming from rear end . All stock except upgrading to goodyear wrangler duratrac tires . Any ideas. Thanks

I would avoid telling the dealership you were doing donuts when you bring it in for warranty work, just a thought. Donuts put A LOT of stress into the diff, best case scenario is you just toasted the fluid. Worst case is you need a new rear end.

 

[PapaMap]

I would avoid telling the dealership you were doing donuts when you bring it in for warranty work, just a thought. Donuts put A LOT of stress into the diff, best case scenario is you just toasted the fluid. Worst case is you need a new rear end.

Yea. I'll never tell. Every thing is fine when not doing it . They dont probably consider doughnuts normal driving conditions. But the kids love it