An oil company knows the quality and octane of a gasoline batch before it leaves the refinery, although the Unita Oil Refinery Company apparently contracted with Dupont to test their regular gas blend out in the field. These photos were taken in 1954 by a Vernal Express Newspaper photographer in Vernal, Utah, for a promotional effort by Unitah.
The samples collected at Ashley Farmers Co-op gas pumps were checked by DuPont in Test Car No. 40 to find out how well they performed out on the road. The ten small tanks in the trunk held the collected samples, which were checked individually by the use of solenoid operated valves that connected them one at a time to the automobiles main fuel line.
Share with us the make and model of the car and what you find of interest in this photograph courtesy of the J. Willard Marriott Digital Library.