I just got my suburban about a month ago and I want to pretty much change out all the fluids I also don't have a manual for the truck and cant find much online.
How much differential lube do I add when I change that out?
How much anti freeze will it take?
From what I could find with a filter it should take 7 quarts (6.2L diesel V8 J 201,000 ish miles).
how much brake and tranny fluid?
Also any recommendations on additives like Lucas oil or Marvels Mystery Oil kind of stuff?
I am also going to be changing out the fuel filter too.

I have the Chilton manual for it but it doesn't really give specific oil and lube amounts to use and I am trying to do as much as I can on a paycheck which isn't much.