Extended Life (XL) 0W-20 Synthetic Motor Oil

AMSOIL Extended-Life 100% Synthetic Motor Oil has been upgraded and 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. AMSOIL Extended-Life protection delivers peace of mind and convenience.

Boosted Protection For Extended Life

  • 37% more cleaning power1 to help keep your engine running smoother, longer.

Product Code XLZ

Resists Oil Breakdown


New XL 0W-20 20,000 mile oil

XL Synthetic Motor Oil maintains its fluidity (viscosity) under the most extreme conditions. Some oils break down and significantly increase in viscosity after extended periods of high-temperature operation. These changes can cause excessive oil consumption, engine deposits, accelerated wear and difficult cold-starts. The GM Oxidation and Deposit (GMOD) Test consists of a 5.7L V8 engine running at 293ºF (100º hotter than normal) for 100 hours. These severe operating conditions test an oils ability to control viscosity increase, deposits and oil consumption. The testing revealed that AMSOIL XL Synthetic Motor Oil provides 64 percent more protection against oil breakdown1 than required by the GM dexos1® Gen 2 specification, ensuring protection in extreme temperatures.

Constantly Updated Product Data Bulletin

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Buy in the Omaha store at 84th & G or use this Online link to the amsoil sales page if you are outside of the area.

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Protects Pistons from Low-Speed Pre-Ignition

XL Synthetic Motor Oil features unique chemistry proven 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-inject (GDI), often coupled with a turbocharger. These technologies heighten the possibility of LSPI events, which can destroy pistons and connecting rods. A properly formulated motor oil is critical for protecting your engine against LSPI.

Original equipment manufacturers (OEMs) like GM have addressed the issue by designing tests to determine a motor oil’s ability to prevent LSPI. XL Synthetic Motor Oil achieved 100 percent protection against LSPI2 – zero occurrences were recorded throughout five consecutive tests.

Keeps Engines Clean

AMSOIL Extended Life Synthetic Motor Oil is fortified with detergent and dispersant additives. Its boosted additive package effectively raises the total base number (TBN) to neutralize acids and resist sludge, corrosion and carbon deposits. XL provides 25 percent more cleaning power3 to help keep your engine running smoother, longer.

Reduces Maintenance

Motorists, business owners and fleet managers benefit from the boosted engine protection of AMSOIL XL Synthetic Motor Oil. Frequent oil changes are expensive, time-consuming and inconvenient. The extra protection built into Extended Life can provide extended drain intervals up to 20,000 miles or one year4, if you choose, allowing you to change oil on your schedule, reduce maintenance, save money and reduce waste oil.

Maximizes Fuel Economy & Maintains Low Emissions

Extended Life Synthetic Motor Oil is licensed by the American Petroleum Institute (API) to meet and exceed the requirements commonly found in owner’s manuals. It excels in fuel-economy testing, earning the additional “Resource Conserving” designation from the API. XL is also friendly toward modern emissions control systems, promoting proper operation of catalytic converters for optimum service life and low exhaust emissions.

All trademarked names are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use.


Use AMSOIL XL Extended Life 0W-20 Synthetic Motor Oil in applications that require any of the following specifications:

API SP (Resource Conserving), SN Plus, SN…; ILSAC GF-6A, GF-5, GF-4…; 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


AMSOIL XL Synthetic Motor Oil is compatible with conventional and other synthetic motor oils. Mixing other oils with AMSOIL motor oils, however, will shorten the oil life expectancy and reduce the performance benefits. AMSOIL does not support extended drain intervals where oils have been mixed.

Aftermarket oil additives are never recommended for use with AMSOIL XL Synthetic Motor Oil.


For immediate answers to your technical questions call (715) 399-TECH (8324) between 8 a.m. and 5 p.m. Central time or email tech@amsoil.com.


In gasoline-fueled vehicles, AMSOIL XL Synthetic Motor Oil is recommended for up to 20,000 miles/one year oil change intervals, or longer when recommended in owner’s manuals or indicated by electronic oil life monitoring systems. Change the oil filter at every oil change regardless of filter brand.


Using AMSOIL synthetic lubricants or practicing extended drain intervals does not void your new vehicle or equipment manufacturer’s warranty. All AMSOIL products are backed by a Limited Liability Warranty. For complete information visit AMSOIL Warranty Information/.

Health and Saftey

This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Safety Data Sheet (SDS) . An SDS is available via the Internet at www.amsoil.com or upon request at 715-392-7101. Keep Out of Reach of Children. Recycle used oil and bottle.

*All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use. All products advertised here are developed by AMSOIL for use in the applications shown.


Customer Comments:

Great product. Trusted for decades

By  Chuck,  a  Verified Buyer  from  Pa  on  January 05, 2024
I’ve used Amsoil products for decades with complete confidence and great results. My current vehicles have 206,000 miles, 166,000 miles and 101,000 miles. Never any internal engine problems. All running great. I also use Amsoil (Z-Rod) in my fourth vehicle, a ’47 Hudson and all my boats and mowers.

Loyal AMSOIL Customer

By  DANNY,  a  Verified Buyer  from  Alabama  on  December 18, 2023
This is the only oil I will run in my 2016 Jeep JKU. I bought it with right at 30k on the odometer and immediately switched it to AMSOIL. According to its maintenance records it was serviced exclusively at a CDRJ dealership, but I do all my maintenance and wanted to run AMSOIL. The JK ran smoothly before, but when I switched to the AMSOIL it was noticeably smoother and quieter. The same was true for every vehicle I switched over to AMSOIL. If you’re on the fence, give it a try! I seriously doubt you’ll switch back to whatever oil you were running before.

Perfect for my wife’s pilot

By  JASON,  a  Verified Buyer  from  Iowa  on  December 08, 2023

Works better than any oil i have used. Cleaner for a longer period of time unlike the other oils

Amsoil Extended Life Motor Oil

By  Bernie,  a  Verified Buyer  from  Tucson  on  November 30, 2023
I’ve been using Amsoil products in my vehicles for years, 1st time trying Extended Life. Took a recent round trip to Texas around 2k miles, checked the oil, the vehicle didn’t consume and looked clean (transparent).

I will continue to buy this product.
By Gene 12/27/2016

from undisclosed

I use this in my 2013 GMC Sierra 1500 Z-71. It’s been a great product. Living in cold temps, and usually making short trips, this fits the profile my truck needs.


Amsoil XL 0W-20 motor oil
By Floyd 12/23/2016

from undisclosed

I have been using this oil in my present 2012 Honda Pilot since I bought it and is excellent oil. I also used it in my 2000 Acura TL for about 4 years before I sold it. Never an issue with oil problems using this oil..