Losing a quart of oil every 150 miles seems bad? For the environment more so than the price of the car?
Restoring really old, rare cars means paying for custom part manufacturing. Or having your own machine shop. There are still parts for 1957 Chevys, but a 1929 REO, no.
I know that judging the past by the morals of the present is a fashionable but pretty much everyone in 1929 found oil on the road far preferable to horse excrement.