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Gonna own a diesel, you need to be able to get codes and monitor the system when there is a problem
These should be mandatory for any 6.0
Fuel pressure gauge -- M12x1.5 thread adapter
Base oil pressure gauge -- test port on front of oil cooler housing 9/16x18 imperial o-ring fitting
Cooling system pressure -- tee in the small vent hose near the coolant bottle
I suggest downloading ForScan and using the OBDLink MX+ or the BAFX adapter for troubleshooting
Torque Pro would be good for everyday use with an old phone or tablet
Scan Gauge is small and simple -- can be mounted in front of the instrument cluster
There are other monitors, but the price goes higher (SCT, Edge)
ForScan is a simple download for PC, you can get it in just a few minutes -- the "lite" version is available on the app stores for your device.
There is a "demo" in the app options, so you can use the app without being connected, to get familiar with the screens
The BAFX adapter is the least expensive and a reliable adapter -- the MX+ is smaller, faster and more features, especially if you also have newer vehicles
You do not need the license for troubleshooting - only for advanced programming
The PC version is the most powerful and does the injector "click test" among other tests
OBDLink® MX+ - Outstanding Bluetooth-Compatible OBD II Scan Tool -- Bluetooth - advanced CAN protocols
OBDLink® EX - OBD2 Adapter For ELM327 & FORScan -- USB corded
BAFX Products® - Wireless Bluetooth OBD2 Reader / Scanner for Android Devices -- Bluetooth