This is a notable trade-off. Expect roughly 8–10 mpg while towing and 12–14 mpg unloaded, regardless of the load's intensity. Reliability Concerns
“International did a great job on their part but Ford really screwed the pooch when it comes to everything attached... It’s pretty darn reliable but it’s always something.” Facebook · Ford-Trucks · 8 months ago 3L gas engine specifically against the ? Why We SWITCHED From Ford 7.3L Gas to DIESEL 7.3The Big Short
Some speculate that low oil pressure at idle (as low as 8 psi by design) may contribute to these failures. This is a notable trade-off
For those who want a capable workhorse without the complexity of DEF or DPF systems, the 7.3L is highly regarded, though it requires a tolerance for high fuel costs. It’s pretty darn reliable but it’s always something