In the early days of the gas station, attendants would do more than just fill up your tank—they would often clean your windshield and check your oil, too. If you needed new oil, an attendant would grab a metal oil can, add oil to your car's engine, and then throw away the can.

These days, the relatively few oil cans that survived that familiar pattern have become collectibles. Motor oil cans were made by the American Can Company, Columbia Can Company, National Can Company, St. Louis Tin & Sheet Steel Metal Works, and St. Louis Can Company, among others. These cans not only served as containers, they also gave oil companies one more opportunity to advertise their brand name and logo. The standard can size was one quart, but some oil cans were as large as five or even 10 gallons.

The earliest oil cans were square and boxlike. Oil companies eventually switched to cylindrical cans with a soldered seam, which was visible as a gray stripe on the back or side... These cans were common until the early 1940s.