"FOREWORD: (a) This Code was prepared by the Special Committee on the Standardization of Pumping Equipment and Engines@ appointed by the Board of Directors of the American Petroleum Institute. (b) In addition@ the Committee previously adopted a complete set of gas engine specifications entitled@ ""A. P I. Specifications for Internal Combustion Engines and Clutches tor Oil Field Service""@ (A. P. I. Stds. No. 11-C). (c) The Committee@ in preparing this Code@ has endeavored to formulate rules for the installation operation@ and care of oil field gas engines The Code represents the collective opinion of manufacturers@ technical men and oil operators. (d) This Code applies to the installation@ operation and care of internal combustion engines tor oil field service@ similar to the service specified in A. P. I. Stds. No. 11-C."