Normal Service Drain Interval Recommendation for: Signature Series 0W-20 Synthetic Motor Oil (ASMQT) Signature Series 0W-20 Synthetic Motor Oil (ASMQT)

Normal Service Drain Interval

Normal Service: Personal vehicles frequently traveling greater than 10 miles (16 km) at a time and not operating under severe service.
Servere Service: Commercial or fleet vehicles, extensive engine idling, daily short trip driving less than 10 miles (16 km), frequent towing, plowing, hauling or dusty condition driving.


Normal Service: Up to 25,000 miles or one year, whichever comes first.
Severe Service: Up to 15,000 miles or one year, whichever comes first


In all non-gasoline fueled vehicle applications, extend the oil change interval according to oil analysis or follow the OEM drain interval
Recommended for extended drain intervals in unmodified and mechanically sound gasoline fueled vehicles. Engines operating under modified conditions(non-stock) are excluded from extended drain recommendations. Mechanically sound engines are in good working condition and do not, for example, leak oil or consume excessive amounts, are not worn out, do not overheat, do not leak anti-freeze and have properly working emission control systems. AMSOIL recommends repairing malfunctioning engines prior to the installation of AMSOIL synthetic oils.