Swapped drivetrain fluids, finally. Front/rear diff, transfer case, drain and fill transmission, engine oil/filter. Als, I retorqued leaking oil cooler. Note for second gen owners on this...I ordered a new gasket with intention of swapping gaskets. However, the one I ordered was the wrong size, discovered when I removed the cooler. I still dropped the cooler, wiped down the mating surfaces, wiped down the gasket, reinstalled cooler, and re-torqued the cooler. There's been a leak under there for several weeks now and I think the re-torque has helped, even without installing a new gasket. /knocks on wood/