Nobody can pinch a penny better than a farmer...
The price of fuel since the early 70's has ensured that the average family farmer has to work a full-time job in town just to be able to keep his land, and they don't waste anything...it gets put to use somewhere.
When they could afford one of them new-fangled electric warshing machines, the Maytag engine got put to use on the wellhead.
A lot of vintage engine equipment that can be found at farm sales is held together with spit and baling wire, and sometimes they have some really funky handmade parts on them, but they're out there in quantity, many of them still in service after 50 years.
By the way...make sure I'm with you if you get near our barn...the dogs don't even like it when I go in there...they think that's their house...and their old Cushmans.