Oil bottles were used to dispense bulk oil at service stations from early in this century until the 1950's. The spout style bottle is usually a quart roughly the diameter and height of a round glass milk bottle but with a wide neck and a threaded finish to accommodate a zinc spout. Spout bottles come in a wide variety of shapes. There are two other types of oil bottles. Tall style bottles are also a quart size, but they are over an inch narrower and more than a half foot taller than the regular style.
Talls have a full pouring lip with no threads or spout.
The third style consists of World War II specials. At first glance, they appear to be 1940's drink bottles or coffee jars. These specials do not fit regular spouts. Labels or trademarked closures make these more desirable. Oil bottles were in use from the 1910's to 1950's.