I use the same products as Mr SDunkle600.
For a full tank, 16-oz of both... . Truck runs great!
I am a short distance driver,,, the truck does not even come close to warming up in the winter,,, so I depend on the above to keep the injectors clean... When I change my fuel filter,,, it looks like brand new in there. Totally CLEAN!!! I also buy fuel from a Chevron dealer, they have a new building and new tanks right here in El Dorado Hills, Cali... .
Good luck. .