Today i was changing the gear oil in my front diff. (YJ Dana 30 Open)
I thought i got 80W-90 with both bottles, but I had accidentally picked up 1 bottle of 85W-140. I used the first quart of 80W-90 and about half the bottle of 85W-140 to get it to the fill hole. And it was after i was throwing everything away that I saw my error.
I'm not to worried about it, and i know diff's aren't to picky about the oil you put in them, and i feel stupid for asking but i just want to be sure.
So is mixing 1 quart 80W-90 and half a quart 85W-140 to fill my diff going to damage it?
Or would it be a good idea to drain it and refill with all 80W-90?