VOwens
Junior Member
I have a 2017 Ram 1500 4x4 with a 235mm rear axle and limited slip and a 215mm front axle. At least that's what a VIN check on Mopar.com yielded. I'm confused about what oil to use in my differentials. The transfer case looks pretty straight forward...oil for a BW44-44 unit. Looks like Ravenol has this product. Dealer says it takes 3 pints. Ravenol says 1.4-1.8 liters (2.9-3.8 pints)...looks like I should buy 2 liters or 2 qts.
The Owners manual says to use Mopar Synthetic Gear Lubricant SAE 75W-140 (MS-8985) with 5 oz of Mopar Limited Slip Additive (MS-10111) for the rear differential. The local Ram Dealer's Parts Department tells me their computer says I should use SAE 75W-85. So wo do I trust? The Owner's Manual or the Dealer's computer? 75W-140 or 75W-85? I won't be buying the Mopar fluids since they are priced ridiculously. I live in Western Oregon so I don't deal with extreme ambient temperatures like in Arizona. I do tow a camp trailer fairly routinely in the summer. It appears most aftermarket lubricants already contain a LS additive. Do I need to worry about that? Dealer says it should take 4.22 pints. Ravenol says 2.2-2.9 liters (4.6-6.1 pints)....looks like the upper end is over 3 qts so sounds like 4 liters or 4 qts.
The Owner's Manual and the Dealer's computer are consistent for the front differential. Both say use GL-5 Synthetic Axle Lubricant SAE 75W-85. Any issues there? Dealer says it should take 2.3 pints. Ravenol says 1.1-1.4 liters (2.4-3.0 pints)...looks like the upper end is about 1.5 qts so sounds like 2 liters or 2 qts will work.
Any recommendations for lubricant brand. I found everything I need (I think) on the Ravenol site, but it appears to require placing an order. Is RedLine from O'Rielly's OK? What about Mobil products? Any others?
Appreciate any assistance you can offer.
Thanks
Vern
The Owners manual says to use Mopar Synthetic Gear Lubricant SAE 75W-140 (MS-8985) with 5 oz of Mopar Limited Slip Additive (MS-10111) for the rear differential. The local Ram Dealer's Parts Department tells me their computer says I should use SAE 75W-85. So wo do I trust? The Owner's Manual or the Dealer's computer? 75W-140 or 75W-85? I won't be buying the Mopar fluids since they are priced ridiculously. I live in Western Oregon so I don't deal with extreme ambient temperatures like in Arizona. I do tow a camp trailer fairly routinely in the summer. It appears most aftermarket lubricants already contain a LS additive. Do I need to worry about that? Dealer says it should take 4.22 pints. Ravenol says 2.2-2.9 liters (4.6-6.1 pints)....looks like the upper end is over 3 qts so sounds like 4 liters or 4 qts.
The Owner's Manual and the Dealer's computer are consistent for the front differential. Both say use GL-5 Synthetic Axle Lubricant SAE 75W-85. Any issues there? Dealer says it should take 2.3 pints. Ravenol says 1.1-1.4 liters (2.4-3.0 pints)...looks like the upper end is about 1.5 qts so sounds like 2 liters or 2 qts will work.
Any recommendations for lubricant brand. I found everything I need (I think) on the Ravenol site, but it appears to require placing an order. Is RedLine from O'Rielly's OK? What about Mobil products? Any others?
Appreciate any assistance you can offer.
Thanks
Vern