rear diff temperature normal driving

[Sully67]

hello fellow members just wondering as when I drove Morrice for a road test 20 miles which has a Morris marina axle fitted after doing a diff oil change using Castrol classic ep90 I was looking underside and checking for leaks I noticed the diff was hot to touch is this normal.
Cheers Mark

[philthehill]

The oil in the diff will get hot by the actions of the interactive parts even when driving normally.
My Ser 2 had a Marina rear axle fitted and that would get hot.

[simmitc]

It probably depends on what temperature is defined as "hot". 40 degrees C, not worried, 85 I would be; but I'm afraid that I don't know what the "normal" is.