I am going to change my diff fluid as well as my transfer case oil. I went to Advanced auto and was going to buy MOBIL 1 but I realized that "Lucas" is 2 bucks cheaper so I decided to use it. The question is:
What does everyone think of Lucas products and do I need any special additives for the rear Diff b/c of the locker.
I am going to get 75w-90 GL-5 and use if in the transfer case and both Differentials.
Any tips would be greatly appreciated.