Development of Heavy-Duty Oils for Military Vehicles

THE U. S. Army now specifies a single type of heavy-duty oil for use in all ground force vehicles.

To bring this oil, covered by U. S. Army Specification 2-104B, to its present satisfactory state required extensive laboratory and road testing.

A discussion of the difficulties that had been experienced with the old straight mineral oil when it was used in modern high-performance engines and the development work performed by the Ordnance Department in evolving the present heavy-duty oil specifications is presented here by Major Bassett.