AMSOIL Extended-Life 100% Synthetic Motor Oil | 20,000-Mile Protection
AMSOIL Extended-Life Synthetic Motor Oil delivers up to 20,000-mile drain intervals. Resists oil breakdown, protects against LSPI, and keeps engines clean. Available in 5 viscosities.
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AMSOIL Extended-Life 100% Synthetic Motor Oil | 20,000-Mile Protection: Every Product in the Line
| Product | Viscosity | Details | Shop |
|---|---|---|---|
| AMSOIL Extended-Life 100% Synthetic Motor Oil 0W-20 | 0W-20 | Details → | Shop at AMSOIL.com → |
| AMSOIL Extended-Life 100% Synthetic Motor Oil 10W-30 | 10W-30 | Details → | Shop at AMSOIL.com → |
| AMSOIL Extended-Life 100% Synthetic Motor Oil 10W-40 | 10W-40 | Details → | Shop at AMSOIL.com → |
| AMSOIL Extended-Life 100% Synthetic Motor Oil 5W-20 | 5W-20 | Details → | Shop at AMSOIL.com → |
| AMSOIL Extended-Life 100% Synthetic Motor Oil 5W-30 | 5W-30 | Details → | Shop at AMSOIL.com → |
Enhanced Protection for Peace of Mind and Convenience
AMSOIL Extended-Life 100% Synthetic Motor Oil is overbuilt for road warriors so you can confidently drive up to 20,000 miles (32,000 km) 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. AMSOIL Extended-Life protection delivers peace of mind and convenience.
Available in five viscosity grades — 0W-20, 5W-20, 5W-30, 10W-30, and 10W-40 — Extended-Life covers a wide range of passenger vehicle applications with API SQ certification and broad OEM specification coverage.
Choose Your Viscosity
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Independent AMSOIL Dealer #1858536
Resists Oil Breakdown
Extended-Life Synthetic Motor Oil maintains its fluidity (viscosity) under extreme conditions. Some oils break down and significantly increase in viscosity after extended periods of high-temperature operation, causing excessive oil consumption, engine deposits, accelerated wear, and difficult cold starts. AMSOIL Extended-Life resists oil breakdown, ensuring protection in extreme temperatures.
Protects Pistons from Low-Speed Pre-Ignition
AMSOIL Extended-Life Synthetic Motor Oil features unique chemistry to protect your engine against the harmful effects of low-speed pre-ignition (LSPI). LSPI is the spontaneous ignition of the fuel/air mixture prior to spark-triggered ignition. Most new engines feature gasoline direct injection (GDI), often coupled with a turbocharger. These technologies heighten the possibility of LSPI events, which can destroy pistons and connecting rods. AMSOIL Extended-Life is formulated to guard your engine from LSPI.
Keeps Engines Clean
Extended-Life Synthetic Motor Oil is fortified with a boosted additive package that neutralizes acids and resists sludge, corrosion, and carbon deposits. The extra protection built into Extended-Life provides peace of mind knowing your vehicle is getting premium protection and the convenience of extended drains.
Extended Drain Intervals
Normal Service
- Up to 20,000 miles (32,000 km)
- One year
- Whichever comes first
For personal vehicles not operating under severe service conditions.
Severe Service
- Up to 12,000 miles (20,000 km)
- One year
- Whichever comes first
Severe service conditions include commercial or fleet vehicles, excessive idling, frequent towing, hauling, plowing or driving in dusty conditions.
Important Notes:
- 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 or one year with other brand filters
- Always change filter when changing oil
- Check oil regularly to maintain proper fill levels
Applications & Specifications
0W-20 (XLZ)
- API SQ (Resource Conserving), SP, SN Plus
- ILSAC GF-7A, GF-6A, GF-5
- GM dexos1 Gen 3 (supersedes dexos1 Gen 2 and 6094M)
- ACEA A1/B1
- Chrysler MS-6395
- Ford WSS-M2C947-A, WSS-M2C947-B1, WSS-M2C962-A1, WSS-M2C972-A1
5W-20 (XLM)
- API SQ (Resource Conserving), SP, SN Plus
- ILSAC GF-7A, GF-6A, GF-5
- GM dexos1 Gen 3 (supersedes dexos1 Gen 2 and 6094M)
- ACEA A1/B1
- Chrysler MS-6395
- Ford WSS-M2C930-A, WSS-M2C945-A, WSS-M2C945-B1, WSS-M2C960-A1, WSS-M2C970-A1
5W-30 (XLF)
- API SQ (Resource Conserving), SP, SN Plus
- ILSAC GF-7A, GF-6A, GF-5
- GM dexos1 Gen 3 (supersedes dexos1 Gen 2, 4718M, LL-A-025, 6094M)
- ACEA A1/B1, A5/B5
- Chrysler MS-6395
- Ford WSS-M2C929-A, WSS-M2C946-A, WSS-M2C946-B1, WSS-M2C961-A1, WSS-M2C971-A1
- Honda HTO-06
10W-30 (XLT)
- API SQ (Resource Conserving), SP, SN Plus
- ILSAC GF-7A, GF-6A, GF-5
- ACEA A1/B1, A5/B5
- Chrysler MS-6395
- Ford WSS-M2C205-A
- GM 4718M, 6094M
10W-40 (XLO)
- API SQ, SP, SN Plus
- ACEA A3/B3, A3/B4
Order AMSOIL Extended-Life Synthetic Motor Oil
Get extended protection and convenience with AMSOIL Extended-Life Synthetic Motor Oil.
Shop Extended-Life at AMSOIL.com Independent AMSOIL Dealer #1858536
For wholesale pricing, contact National Synthetics about the Preferred Customer program and save up to 25% on all AMSOIL products.
Frequently Asked Questions
AMSOIL Product Warranty
Using AMSOIL synthetic lubricants or practicing extended drain intervals does not void your new vehicle or equipment manufacturer’s warranty. All AMSOIL lubricants and filters are covered by the AMSOIL Limited Warranty. For complete information visit AMSOIL.com/guarantee.
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Frequently Asked Questions
How long can I go between oil changes with Extended-Life?
AMSOIL Extended-Life is guaranteed for up to 20,000 miles (32,000 km) or one year, whichever comes first, in normal service. For severe service conditions (commercial/fleet vehicles, excessive idling, frequent towing/hauling), the interval is up to 12,000 miles (20,000 km) or one year.
What is the difference between Extended-Life and Signature Series?
Both are 100% synthetic motor oils with LSPI protection. Signature Series is the premium tier with 25,000-mile drain intervals and 75% more engine protection against wear than industry standards. Extended-Life delivers 20,000-mile drain intervals at an accessible price point — ideal for drivers who want extended protection and convenience without the premium cost.
Does Extended-Life protect against LSPI?
Yes. AMSOIL Extended-Life Synthetic Motor Oil features unique chemistry specifically formulated to guard against low-speed pre-ignition (LSPI), which is a concern in modern gasoline direct injection (GDI) engines often coupled with turbochargers.
Can I mix Extended-Life with other motor oils?
Yes, Extended-Life is compatible with conventional and other synthetic motor oils. However, mixing other oils will shorten the oil's life expectancy and reduce its performance benefits. AMSOIL does not support extended drain intervals where oils have been mixed.
Which viscosity should I use for my vehicle?
Always follow your vehicle manufacturer's viscosity recommendation found in your owner's manual. Use the AMSOIL Product Guide to find the right viscosity for your specific vehicle.