Signature Series Motor Oil

Long-term protection, with a clear maintenance plan.

Signature Series is designed to control wear and deposits in gasoline engines. Choose the viscosity and specifications required by your vehicle; the grades below are not interchangeable.

Is 25,000 miles right for my vehicle?

Normal service: up to 25,000 miles, 700 operating hours or one year. Severe service: up to 15,000 miles, 700 hours or one year. In each case, use the limit reached first. Commercial use, excessive idling and frequent towing, hauling, plowing or dusty driving count as severe service.

With a non-AMSOIL filter, do not exceed 12,000 miles or one year unless the vehicle manufacturer specifies longer. Modified engines, racing and alternative-fuel use are excluded from extended intervals. Outside the U.S. and Canada, follow the vehicle manufacturer’s interval. Review the complete current instructions before extending a drain.

Current AMSOIL references: Reference 1 · Reference 2