After July 1986, Zippo began including a date code on all lighters showing the month and year of production. On the left of the underside was stamped a letter A–L, denoting the month (A = January, B = February, C = March, etc.). On the right was a Roman numeral which denoted the year, beginning with II in 1986.

How do you read the bottom of a Zippo lighter?

0:091:21Zippo Instructional: Lighter Date Codes - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe current date code system uses a letter and two-digit number to identify the month and year ofMoreThe current date code system uses a letter and two-digit number to identify the month and year of manufacture letters. A through L represent the month a for January B for February etc.

How often should a Zippo be refilled?

Well, it varies with everyone and there is nothing specific about how many days will it last but if you want an average then, in our opinion a Zippo lighter can last up to 1 week. After that, you will have to refill it.