I think heaters were optional in the old days. I needed mine this morning for sure. The frost plug heater which is on a timer helps with the 6-volt starting and gets the water temp up a little faster.

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.