New Truck

[frule]

Have a new Av with the 5.3.I haven't had a 4x4(or full-size truck) in years and want to use the BEST fluids.There's a lot more choices than the last time I had to do lubes,transfer cases,etc.

I'm guessing the synth in the rear diff is best left alone.But what about the ATF fluid,the transfer case and front diff fluids?Also,the best grease for lube jobs?

 Many thanks for recommendations and best change intervals.