Do you think a 75w-140 that exceeds levels of API GL-4 , API GL-5, API MT-1 , SAE J2360 (MIL-PRF-210SE), MACK GO-J, PG-2 Limited Slip

I dont understand any of them but do you think I am save in putting it into my diff.

Morgan 2009 Roadster Rolls Royce Lush Green 3.0 V6
Audi A4 Advant (some blue colour not botherd)