Used to be able to fix a car, before the algorithms took over.
Finally caught up with hubby, he likes the bells and whistles as a Senior, but misses tinkering on the pre 1970 cars. Has to stick to the house stuff. Not much has changed there. He can still do the minor electronic trouble shooting, taught it for nearly 40 yrs.
My dad’s first car was a Chevy and the oil filter was an option.
A car like that was made to be repaired by its owner.