Read about 2 others with 3500's that the diff was low on gear lube. One was wiped out at 3000 miles, other was 1.5 qts low.
I checked the '23 2500 this afternoon. ~1.5 qts low on the rear and ~.5 qt low on front diff. Not exact, but it took 2 qts between them.
Front diff had a blue index marker mark on fill plug. Plug was finger loose. Marks were lined up. Either plug was out a full turn or was just marked loose. Has not been in water yet, so not worried about drain and refill. These are not the old school NPT plugs, but use a flat o-ring to seal. So don't bare down on it.
Diffs take full synthetic 75w90 per dealer.
If you can't do it yourself, hire it done!
My '22 3500 drw is still setting on dealers service lot, waiting on engine harness, goingon 5 months. Will have them fill diffs before I pick it up and check myself when she's home.
Will check the '21 1500 this evening when wife gets home.
I checked the '23 2500 this afternoon. ~1.5 qts low on the rear and ~.5 qt low on front diff. Not exact, but it took 2 qts between them.
Front diff had a blue index marker mark on fill plug. Plug was finger loose. Marks were lined up. Either plug was out a full turn or was just marked loose. Has not been in water yet, so not worried about drain and refill. These are not the old school NPT plugs, but use a flat o-ring to seal. So don't bare down on it.
Diffs take full synthetic 75w90 per dealer.
If you can't do it yourself, hire it done!
My '22 3500 drw is still setting on dealers service lot, waiting on engine harness, goingon 5 months. Will have them fill diffs before I pick it up and check myself when she's home.
Will check the '21 1500 this evening when wife gets home.