So i’m having a little trouble, I haven’t done any work on my dana 30 with the ARB cover and locker, and I don’t know the exact fluid to use, ive heard 75W-90, 75W-140 and 85W-140... That’s a huge range. Also am not sure what the proper fluid capacity is in a Dana 30 with an ARB locker and cover, can anyone help me with this?