hellcat287
Junior Member
Noticed a pretty good whine in the rear diff of my 2020 1500 Classic (3.21 rear end) in the morning temps (around 40 - 45F); mostly accelerating from a stop. It will slowly go away as the rear end warms up. Took it to the local dealer and they "cannot replicate".
Thinking about changing the rear end fluid since the truck almost have 50K and I don't have a full history (I'm the third owner.) I don't have a manual but from what I've read the correct type is 75W-90. Wondering if I went with a little thicker fluid 75W-140 that might quiet things down a little bit and provide better protection. I live in Las Vegas so it gets hotter here than colder.
Also, can't find the torque specs for the drain plug. I've seen 24, 32, 44 and 60 - quite a spread!
Would appreciate any input on the subject.
Thanks!
Thinking about changing the rear end fluid since the truck almost have 50K and I don't have a full history (I'm the third owner.) I don't have a manual but from what I've read the correct type is 75W-90. Wondering if I went with a little thicker fluid 75W-140 that might quiet things down a little bit and provide better protection. I live in Las Vegas so it gets hotter here than colder.
Also, can't find the torque specs for the drain plug. I've seen 24, 32, 44 and 60 - quite a spread!
Would appreciate any input on the subject.
Thanks!