Most industries in today's world are shifting their focus toward efficiency improvements by putting an emphasis on reducing energy requirements for equipment used in plant operations and for vehicular equipment. Technological advances in lubricants have helped reduce the input power used to operate equipment by reducing friction. Summit has developed synthetic gear oils which will not only reduce frictional drag, but will also protect gears against failures associated with heavy loading. Syngear® Heavy Duty Series meet the requirements of the API designations GL-5 & MT-1, the MIL-L-2105E specification, SAE J2360 and the Mack GO-J specification. Summit Syngear® Heavy Duty Series lubricants are designed to meet the requirements of Eaton and Rockwell differentials.