The 2020 Ford Super Duty enters a market with stiff competition from GM and Ram.
Ford designs and builds all their heavy-duty engine and transmission combinations in house.
The 2020 Super Duty is the most tested truck in Ford’s history, logging an excess of 15 million miles. 

Meet the 2020 Ford Super Duty. It’s bigger. It’s badder. And in one striking way, it’s a little familiar. Glancing over the specs, one item will stand out immediately for Ford fans: that is the return of the 7.3. Although this new version differs from the near-immortal Navistar T444E engine of the 90s and early 2000s in one way: it’s a gasoline plant.
I know. I got excited too, thinking when Ford said 7.3 they meant diesel. But we’ll take the nostalgia factor. Setting The Stage
When the 6.7-liter Power Stroke debuted in 2010, along with the TorqShift Transmission, Ford promoted them as being “designed in-house.” The move, at that time, was a departure from the partnership with Navistar International Corporation. That association supplied Ford’s diesel trucks over the years with the 7.3 (1994-2003), the 6.0 (2003-2007), and the 6.4 (2008-2010). However, it was only the 7.3 Power Stroke that really held a solid reputation in terms of reliability and performance.
Some owners today recall the 6.0 Power Stroke with little fondness, being sidelined with numerous service bulletins and unforeseen mechanical problems. Head gasket failures, sensor malfunc...