Brings me back to the late 70s and early 80s. Oil changes were 3000 miles max and oil was tar black by then, engines went 100k and then it was on borrowed time. Every 12k miles or so, we would be doing spark plugs, wires, all the filters, condensers and points. Then there’s the carburetors, always acting up and finicky. Everyone owned a timing light or two and if you were adventurous, you’d play with the idle mixture. Don’t get me started on pcv valves, egr valves and broken vacuum lines. And not just the engine. Brakes used shoes that look like they were lined with particle board, pads were practically a block of metal that ate rotors Iike nobody’s business, and everyone knew how to pack and set front wheel bearings. Engineers didn’t know how to seal engines either because most leaked like a sieve and you can scrape off the sludge with a putty knife. These days, it’s very likely you can go 100k miles without so much as an oil change. But back in the day, if you didn’t self tinker, your car would be in the shop all the time. Compared to modern equipment, they do require frequent maintenance and repairs.
My timing light is one of the newer ones that allows you to set the degree you want. It will delay its flash to where you align TDC on the pulley but it is then set at that degree on the knob. Good times 
