Hello from the Smokey mountains!
 

Hello everyone,
This looks like a cool site to play in I'm an Amsoil distributor along with being a fuel efficiency enthusiast,currently I have a 2002 Escalade with the 6.0 beast in it.I have all ready made some mods to the breathing capabilities of caddy with a 1" throttle body spacer which just gave me some better response,a K&N stock replacement filter,then a custom ram air intake with cold air coming from down under bumper going into the stock air box with the K&N.
Probably not getting the mpg benefits due to a heavy foot and living in the mountains,but the throttle response has been a great improvement!
Amsoil full synthetic oil,trans,front and rear diffs are on in the works and should yield 3-5 mpg over stock. Regards Thundereagle

Hello and welcome to fuelly!