Description
Full color 10″ x 12 1/2″ ad that features a view of an AC Spark Plug right side up and upside down. The ad text claims that “Drivers who know which end’s up…get self-cleaning AC’s to help boost power.” The ad says that “AC Spark Plugs exclusive self-cleaning Hot Tip Insulator burns away fouling deposits as you drive…gives peak power longer. Next time you change…ask for AC Fire-Ring Spark Plugs“.
Source: May 20, 1966 Life magazine.
