A True 100% Synthetic 0W-20 Blended to beat our own Signature and others on price.

Buy a case and save even more. The Preferred Customer price is a No Brainer when you click on the store link look at the quart price when you buy by the case (12 quarts or 4-gallons).

What we mean is you are getting Signature Series quality scaled down only slightly to create a price competitive synthetic. If you are NOT constantly pushing your engine to it’s extremes or needing the absolute best (like our Signature Series), the Extended Life 0W-20 is your answer. It’s nearly 50% or our Omaha sales because the performance is there and just like the Signature Series customers say “Wow, I didn’t expect an oil to do this!” Meaning they notice how smooth and quiet the engine becomes after changing.

See the testimonials at the bottom of the page!!

AMSOIL Extended-Life 100% Synthetic 0W-20 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.

Dealer note: Worried about going past 7000 miles? Try a oil test kit. Postage paid kits are at the Omaha store. Ask for the KIT-02 Oil Analysis kit.

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 0w-20 Motor Oil maintains its fluidity (viscosity) under the most extreme conditions. Some labled “Fully Synthetic” 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 0W-20 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

Download PDFProduct Datasheet

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.

Buy & Check PriceAnd Container Size

 

Match Your VehicleProduct Guides

 

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.

APPLICATIONS

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

COMPATIBILITY

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.

TECHNICAL SERVICES

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.

SERVICE LIFE

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.

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 products are backed by a Limited Liability Warranty. For complete information visit AMSOIL Warranty Information/.

 

Extended Life Synthetic Oil Testimonials and Customer Reviews:

 

Total package

By  CALVIN,  a  Verified Buyer  from  Zuni, New Mexico  on  August 24, 2025
I have noticed a significant change in my engine’s performance, idle has decreased runs a lot smoother now.

 

Owner 2015 Ford F150

By  Joe,  a  Verified Buyer  on  August 18, 2025
Been using Amsoil in all my equipment for more than 20+ yrs, so it was just natural to start using it in the 2015 F150 I recently purchased. The engine and oil are both running about 25° cooler. There was a slight misfire, which has progressively gone away as the filter has started cleaning the inside of the motor. Getting 25+ mpg around town which I’m happy with, 28+/- on hwy! 2.7 V6 with 107k mi. Had a little “chatter” at start up, but that’s gone. Way more power, just tap the pedal and hold on, lol. Yeah, I’m a happy camper!

335,000 miles

By  SCOTT,  a  Verified Buyer  from  Maryland   on  July 04, 2025
1995 nissan pickup with 325,000 miles

Great Product, Worth the Price

By  JAMES,  a  Verified Buyer  from  Kansas City  on  July 03, 2025
Recently purchased this for my wife’s 2023 GMC Acadia. After changing the oil, the motor was noticeably quieter and smoother. I was hesitant at first to spend the additional money for the Amsoil, after all, “oil is oil” right??  Not the case at all! I will be purchasing Amsoil from here on out for our vehicles!

Great Oil

By  PaulRapid,  a  Verified Buyer  from  WV  on  June 22, 2025
Have been using this oil for more than 5 years and have had no problems and no oil usage between changes on 3.5 v6 Highlander with 190,000 miles Still gets 22mpg before AMSOIL got 21 mpg !

 

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).

 

 

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..