I need to know how much diff fluid to put in my 06 Dana 44 Rubicon. Axles. I have a g2 front axle cover and the last shop that filled my diffs over filled them and the diff shot fluid everywhere and I needed a toe. I have loomed up the info and some say 2 quarts Ans some say other stuff. I will be using synthetic fluid and I need to amount so I can do it myself. Also and additives? Thanks