Rugo is correct.

If you look at an old movie with a truck (like one of the last scenes in Hud, for example). You will see drivers getting in/out the passenger door (on street, or, by habit, at their homes).

Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.