I have owned two '99's, a 2005 and an early '07 Mega-Cab and now have 2800 miles on my new 2017 4x4, DRW, short bed Mega-Cab. Wow! What a different truck altogether! But I do have some questions....can I use my left over Amsoil Cetane Boost....Amsoil Injector Clean in my new truck? Filling my DEF for the first time created a bit of a mess! No where in the owners manual did I read about the put it...wait...pull out....then fill scenario! Had to get my reading glasses out to try to read the decal on the fuel door....is there any trick to this or "just get the hang of it" with experience? With my past trucks, when pulling my 5th wheel trailers, I would drive using my gauges (EGT's) to tell me when to down shift...when to let off etc., but with my new beast, it just seems to down shift and climb right up! I don't have any way of seeing what my EGT's are so don't know if I am pushing too hard? Do I need to install another EGT gauge or do I assume the computers and transmission know what they are doing? I'm not one to race up and down the mountains here in Colorado, but would like to know how to safely pull my 5th wheel!? Thanks!