You have my sympathies.
My first job out of college was working for a truck line that had a bunch of Dodge city tractors powered by Cummins V8-185 engines. They were the fore-runner of the 555.
The 185 was such a good move that the guy who ordered them got fired and eventually the trucks got repowered by Chrysler gas engines.
Later, I worked for a fleet that leased a bunch of 903 powered IHs. The good thing was that they would literally go forever without an oil change. The lessor never did maintenance. Every one I ever looked at had a hole in the clutch housing - seems 14 1/2 inch clutches weren't made to turn 3,000 rpm. Both 185s and 903s were noisy, leaky, heavy chunks of iron.
I don't miss turning wrenches ... but I'm glad I did it and it put a lot of food on the table.