Description
Full color 9 1/2″ x 13 1/2″ ad for their X-100 Motor Oil. The headline informs us that “Most engine wear caused by Acid Action from ‘On and Off’ driving” and offers the “Unique ‘X’ Safety Factor in Shell X-100 Motor Oil counteracts Acid Action”. There is a drawing of a town where a Burgundy car has taken a trip starting at a house, made three turns and stopped, two more turns and stopped again before making a curve and stopping at a Farm Market. This is the kind of driving that will elevate your cars Acid Action that Shell is trying to help you survive. The text describes how these short trips do not allow your car to properly warm up which begins the chemical action that will cause more engine damage than wear will.
Source: October 10, 1949 Life magazine.
