The gardeners with their leaf blowers and 20 year old unmaintained pickup trucks are not helping either. Every one I pass by has a bunch of empty oil jugs in the bed. I’m sure all of that isn’t helping…
A 20 year old pickup is fuel injected, has a catalytic converter, and is checked by it's OBD2 controls constantly.
Unless the pickup is failing its smog tests, and driving around with expired registration, it's operating pretty well I promise.
Regarding oil consumption, that might be possible, but would eventually clog up the catalytic converters with an oily residue and also cause OBD2 faults for bad catalytic converter efficiency.
