52,500 mile service I did included, changing oils in front and rear diff., engine, transfer case. Did a drain and fill of transmission, four new quarts of J fluid. I took all of these samples and had oil analysis completed. The data is attached. Most everything looks really good. Surprised how well the front diff. oil was after 52,500 miles on the original Nissan oil. The rear diff. has the PML cover and it is in good shape. Transmission had not been touched until now. The transfer case I have some concerns with, there are soem high wear metals and a lot of mung was on the drain plug. So if you use the 4x4 much I would look into changing it. I used Royal Purple Max ATF in the transfer case. Also, changed to Royal Purple in the front and rear diff. The Supertech 75W140 from Wal-Mart went up to $9.99 a quart, and I got the Royal Purple for $8.50.