What is the lube of choice? i need to service mine and would like to know what the best is? I have been told y a shop that on my 04 Rubi I do not need a separate limited slip additive and that most good diff lubes already have a limited slip additive in them.
From the Service manual
• RUBICON 216 FBI (Model 44) - Mopart Synthetic Gear Lubricant 75W-140
Any 75W-140 will work, most are synthetic (and have the LS already ) which is fine cause the Rubicons came with synthetic from the factory. If you do a re-gear you would not want to use synthetic as it gets to hot during the break in period