Re: 7.3 ugrades?
* First is a solid air flow and 4" turbo back exhaust.
*Run synthic oil (5w40 is what many run) in winter. Summer would be bettter but def helps in winter.
*solid oil filter I use Motorcraft or Purolator PureOne and running 7-20k oil tests good(filter changed every 7k).
*I have seen a 1 mpg
increase in my last two trucks with Amsoil in diffs, transfer case, power steering, and transmission.
* Coolant filtration will help.
06' F250 Harley Davidson Edition(Factory 2.5" lift)CCSB-blue sping kit, ARP, gaskets up, Driven Diesel Coolant Return, Sinister Diesel Coolant filter, Rotella ELC, SCT X4, 55gal Aluminum Fuel tank, B & W turnover. ...Hauling New RV's daily.
02' F250 687,000 miles towing...traded to friend for a boat