Description
Full color 9 1/2″ x 13″ ad for their Self-Cleaning Spark Plugs. Pictured is a large plug with a portion of the bottom cutaway so the insulator is visible. The headline claims that “Only AC Spark Plugs have this Self-Cleaning Hot Tip Insulator” and the text tries to explain just what this feature means and what it will do for you.
Source: Unknown
