SERVICE LIFE SPECIFICS

AMSOIL Synthetic Heavy Duty Diesel & Marine Motor Oil AME is recommended for extended drain intervals in unmodified(1), mechanically sound(2) vehicles or equipment as follows:

(1) Engines operating under modified conditions are excluded from extended drain recommendations. Examples include the use of performance computer chips; non-OEM approved exhaust, fuel or air induction systems; and the use of fuels other than those recommended for normal operation by the manufacturer.

(2) Engines are in good working condition and within the factory design settings. Mechanically sound engines, for example, do not leak oil or consume excessive amounts, are not worn out, do not overheat, do not have internal or external anti-freeze leaks and have a properly working emission control system. AMSOIL recommends repairs be made to malfunctioning engines prior to the installation of AMSOIL synthetic oils.

(3) Personal transportation vehicles frequently traveling greater than 10 miles (16 km) at a time and not operating under severe service.

(4) Extensive engine idling, daily short trip driving less than 10 miles (16 km), frequent towing, plowing, hauling heavy loads or dusty-condition driving.