VP IRS diff oil

[V85000i]

i'm going to change my diff oil and was wondering if all that stuff about using only certain oils on the diff tag, is true or can i just use any LSD oil.

[immortality]

80w90 as long as it's says it's for LSD and meets the standards listed in the owners manual etc it should be fine. if used in extreme conditions you could possibly go to 80w140 but again make sure it's for an LSD etc

[Not_An_Abba_Fan]

Go with whatever it says in the manual. My Falcon I had used trans fluid in the LSD.