The restoration guide for my '48 (not the current 261) says 5 1/2 quarts "dry." First fill after a rebuild, I guess. 5 qt for "refill."

It also says the factory installed filter option took 2 1/2 qt! Really!?

I've always figured 6 qt with new filter for the oil change.


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.