XL 5W-30 Synthetic Motor Oil

Boosted Protection For Extended Life

Sioux Falls’s #1 best selling AMSOIL Product

Great for any vehicle, the XL series by AMSOIL is one of the top sellers in our Sioux Falls store. While we suggest the Signature Series for you highest performance vehicle the XL is a perfect choice for an older car with high mileage. Vehicles which the owner may have been reluctant to try or switch to a synthetic – now there is No Excuse!! AMSOIL’s XL exceeds the performance and quality of competitor brands and generally costs less!

Now boosted to 20,000 miles or 12,000 in severe service!

For some the XL line’s greatest feature is the price! It was created to make the highest quality product within a reasonable and acceptable price level for non-automotive enthusiasts.

AMSOIL XL is available at the Sioux Falls Synthetic Warehouse store in 0W-20, 5W-20, 5W-30, 10W-30 and 10W-40 viscosities.

Resists Oil Breakdown

XL 5W-30 Synthetic Motor OilXL 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.

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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.

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Keeps Engines Clean

AMSOIL XL 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 XL 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

XL 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” designation5 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.

1Based on independent testing of AMSOIL XL 5W-30 motor oil in the GMOD engine test required for the GM dexos1 Gen2 specification.

2Based on zero LSPI events in five consecutive tests of AMSOIL XL 5W-30 Motor Oil in the LSPI engine test required by the GM dexos1 Gen 2 specification.

3vs. AMSOIL OE Motor Oil

4See reverse side for details.

5Applicable to XL 0W-20, 5W-20, 5W-30 and 10W-30 motor oil.

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 Synthetic Motor Oil in applications that require any of the following specifications:

5W-30 (XLF)

Use AMSOIL XL 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, 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 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 not 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.


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 long


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.

Buy in the Sioux Falls AMSOIL store at 47073 98th ST. or use this Online link to the XL 5W-30 sale page if you are outside of the area.


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:


5 Stars are not enough for this Oil******************

By  CHARLES,  a  Verified Buyer  from  TN  on  October 30, 2023

All AMSoil products are the best in my book, 1964 Galaxie, Used only Dominator 15W50,??? miles and still going, 2003 F150, Extended Life 5W20, 200,000 miles and still going, 2016 Fusion, Signature 5W20,130,000 and going, 2016 Explorer Signature 5W20 over 100,000 and still going, 1991 Snapper Mower 15W50 and still going, YES, I use it in my lawn equipment too, It’s the BEST PERIOD!! Nuff said!!

By Robert 12/25/2016

from undisclosed

Great product and price !!


Long-term user of a great product
By Gary 8/27/2016

from North Vancouver, BC Canada

I use AMSOIL in a variety of vehicles I own. I started using the products years ago.
XL 5W-30 Synthetic Motor Oil in a 2011 Subaru Outback.
European SAE5W-40 in a 2001 VW GTI and 2006 Audi A3
Recently switched to Marine SAE10W30 on my 2016 Yamaha 115HP and 9.9HP

How would you describe yourself?:
I’m a DIY handyman

What kind of vehicle/equipment do you have?:
See above

Bottom Line
Yes, I would recommend this to a friend


By Gene 8/26/2016

from Waldorf, MD

I have used XL 5W-30 motor oil in two vehicles for the last six years. Very happy with performance and wear. I would recommend this oil to everyone.

How would you describe yourself?:
I love my vehicles / toys

What kind of vehicle/equipment do you have?:
2000 Chevrolet Tahoe and 2008 Cadillac.

Bottom Line
Yes, I would recommend this to a friend