Rear Axle temperatures

[Rick Comenzo]

Recently installed a Mag-Hytec rear cover on my 93 D350. I have added a temp sending unit and gauge, what temperatures should this DANA 70 rear be at, towing a 10k trailer and empty?Thanks in advance. Rick.

 

[Spyke]

I have driven Semis and the rear-ends typically run within 10 degrees of the engine oil temp