I change the oil by calendar. In the Fall and in the Spring.
When I worked at a Chevron station in high school in 1960, we used to idle an engine with an oil/kerosene mixture to supposedly clean things up. (We didn't sell diesel.) I forget the ratio of the two but I do remember being leery of the practice. Also, the standard practice back then was to change the filter every other oil change.
I've never changed transmission or rear end oil.
Last edited by Wally / Montana; 04/23/2024 3:29 PM.
1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
