2001 XJ 81k miles
4.0, AW4, D30, 8.25, 231 soon to be a 242, now featuring Teraflex rear discs :-), currently wearing 4 studded snows, BFG TA KOs during summer.
I have used GC, AFL, ATM, T&SUV, and Pennsoil in the past. 12.5k miles on the T&SUV with a long commute. I recently got a job 1.5 miles from home, and I'm actually going to be moving closer this summer, I still don't know what I'll do. Probably RTS at 3k OCIs year round. GC is in it currently with a purolator Pure-One filter.