Alexander, North Dakota | (701) 770-2275

Extended-Life 5W-30
100% Synthetic Motor Oil

Product code: XLFQT-EA

AMSOIL Extended-Life 100% Synthetic Motor Oil is overbuilt for road warriors so you can confidently drive up to 20,000 miles or one year, whichever comes first, between oil changes. A proprietary combination of advanced synthetic base oils and a boosted additive package promotes cleanliness and prolonged engine life.


Availability and Price subject to AMSOIL stock, visit product's page for updated information.


  • Use AMSOIL Extended-Life Synthetic Motor Oil in applications that require any of the following specifications:

    5W-30 (XLF): API SP (Resource Conserving), SN Plus, SN…; ILSAC GF-6A, GF-5, GF-4…; GM dexos1* Gen 3 (supersedes dexos1 Gen 2, 4718M, 6094M, LL-A-025); ACEA A1/B1, A5/B5; Chrysler MS-6395; Ford WSS-M2C929-A, WSS-M2C946-A, WSS-M2C946-B1, WSS-M2C961-A1; Honda HTO-06
  • AMSOIL Extended-Life Synthetic Motor Oil is compatible with conventional and other synthetic motor oils. Mixing other oils with AMSOIL motor oils, however, will shorten the oil’s life expectancy and reduce its performance benefits. AMSOIL does not support extended drain intervals where oils have been mixed. 

    Aftermarket oil additives are not recommended for use with AMSOIL Extended-Life Synthetic Motor Oil.
  • Normal Service – Up to 20,000 miles (32,000 km) or one year, whichever comes first, in personal vehicles not operating under severe service.

    Severe Service – Up to 12,000 miles (20,000 km) or one year, whichever comes first. Severe service conditions include commercial or fleet vehicles; excessive idling; or frequent towing, hauling, plowing or driving in dusty conditions. 

    • Modified engines (non-stock), racing vehicles and vehicles using alternative fuels (E85, CNG, propane, etc.) are excluded from extended drain interval recommendations.

    • Change at the vehicle manufacturer’s recommended drain interval outside U.S. and Canada.

    • AMSOIL Oil Filters are designed for extended drain intervals. Do not exceed 12,000 miles (20,000 km) or one year with other brand filters unless longer intervals are recommended by the vehicle manufacturer. Always change filter when changing oil.

    • Check oil regularly to maintain proper fill levels. AMSOIL Oil Filters stop smaller particles, flow more oil and last longer than regular filters. For best performance, use AMSOIL Oil Filters.

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