AMSOIL XL 10W-40 Synthetic Motor Oil
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XL 10W-40 Synthetic Motor OilHelp

Boosted Protection For Extended Life

XL 10W-40 Synthetic Motor Oil Product Image
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$9.15 Retail Price (USD)
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Product Code: XLOQT-EA
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AMSOIL XL Synthetic Motor Oil is the choice for those who want to do something extra for their vehicle. Its boosted formulation delivers extra cleaning power, outstanding wear control, excellent high- and low-temperature protection and exceptional fuel economy. XL is engineered for advanced automotive technology, including turbos and direct injection. It is packed with extra engine protection, allowing you to go up to12,000-miles or one year, whichever comes first, between oil changes.

Resists Oil Breakdown
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.

GM Oxidation and Deposit (GMOD) Test

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 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 12,000 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 licenced 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.

APPLICATIONS
Use AMSOIL XL Synthetic Motor Oil in applications that require any of the following specifications:

10W-40 (XLO)

  • API SN, SM...; ACEA A3/B3, A3/B4

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 not 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 12,000 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 www.amsoil.com/warranty.aspx.

Warranty Secure

HEALTH & SAFETY
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.

XLO Package Sizes
Code Package Size Unit of Measure Product
XLOQT (XLOQT-EA) Quart Each XL 10W-40 Synthetic Motor Oil
XLOQT (XLOQT-CA) Quart Case of 12 XL 10W-40 Synthetic Motor Oil
XLO1G (XLO1G-EA) Gallon Each XL 10W-40 Synthetic Motor Oil
XLO1G (XLO1G-CA) Gallon Case of 4 XL 10W-40 Synthetic Motor Oil
XLO30 (XLO30-EA) 30-Gallon Drum Each XL 10W-40 Synthetic Motor Oil
XLO55 (XLO55-EA) 55-Gallon Drum Each XL 10W-40 Synthetic Motor Oil
XLO27 (XLO27-EA) 275-Gallon Tote Each XL 10W-40 Synthetic Motor Oil
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REVIEW SNAPSHOT®

by PowerReviews
AMSOILXL 5W-30 Synthetic Motor Oil
 
4.9

(based on 269 reviews)

Ratings Distribution

  • 5 Stars

     

    (254)

  • 4 Stars

     

    (14)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

100%

of respondents would recommend this to a friend.

Pros

No Pros

Cons

No Cons

Best Uses

No Best Uses
    • Was this a gift?:
    • No (14)

Most Liked Positive Review

 

Best synthetic ever made.!

I started using the longer interval synthetic oil recently and did notice my gas mileage improved along with the engine running very smooth. I have to admit at first I was not sure Amsoil...Read complete review

I started using the longer interval synthetic oil recently and did notice my gas mileage improved along with the engine running very smooth. I have to admit at first I was not sure Amsoil was able to produce a oil that could go for 10,000 miles and beyond. I took the plunge into using a longer time interval change for my car. Amsoil is a company that has dedicated probably countless hours of coming up with a synthetic that can in the real world condition do this. I have taken care of every car I've own since I want them to last me a long time. When the most recent oil change was done I was very impressed on how good the oil looked after. I recommend this oil to all my friends but some you can convince and some remain sceptable. As they say you can lead a horse to water. So I cleaned the throttle body, changed the oil and entered into my maintenance log. If you are on the fence about trying their products, trust me. Become a yearly member and you probably will not go back to whatever oil you were using. I feel Amsoil needs to keep their prices lower for members as they have done so that more people will be able to switch over without question. Cost will always be the factor on if the consumer will give the product a try. I think free shipping, reward points and sales would give existing members to purchase more in advance. Thank you to the entire Amsoil team for their commitment to protecting our engines.

VS

Most Liked Negative Review

 

Not so sure about this product?

I recently switched to this oil in my 4.6L f150. This truck has 106,100 miles on it. It's had motorcraft synthetic blend changed every 3k-5k miles with a fl-820 filter since...Read complete review

I recently switched to this oil in my 4.6L f150. This truck has 106,100 miles on it. It's had motorcraft synthetic blend changed every 3k-5k miles with a fl-820 filter since new.
Immediately after switching to this oil the engine developed some cold start and low RPM knocking.
I believe this is due to the timing chain tensioners and or guides?
The tensioners rely on oil pressure to keep the chains tensioned.
So either the motorcraft was hiding a mechanical issue or this 5w20 isn't of similar viscosity to the motorcraft?
Oil sample will be sent to blackstone at 3k miles.
Still using the motorcraft fl-820 filter with this product.
I cannot recommend this product until I have more info.

Reviewed by 269 customers

Displaying reviews 1-10

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5.0

Good stuff

By 

from Alberta

Verified Buyer

Comments about XL 5W-30 Synthetic Motor Oil:

Used it in my 5.3 Sierra. Good price for great oil

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • Half ton gmc
 
5.0

I trust nothing else.

By 

from Michigan

Verified Buyer

Comments about XL 5W-30 Synthetic Motor Oil:

Have been using Amsoil in my personal vehicles for the better part of a decade now. Michigan weather will eat the body off of the car but the engines purrrrrr! From small engines to ATV's to motorcycles to my Subaru, I can feel (smooth) and hear (quieter) the difference. Moreover, when friends comment on how good something of mine runs, it reinforces the fact that Amsoil is an intricate part of my maintenance routine with all engines in my family.

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • Outback, Impala, Vulcan(s), ATV's, mower
 
5.0

I would definitely recommend this product. Superb quality .C

By 

from Strasburg, Va.

Verified Buyer

Comments about XL 0W-20 Synthetic Motor Oil:

Change the oil when there's 15% oil life left on last oil change. No problem what so ever.

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • Honda Fit, Cub Cadet, push mower.
 
5.0

I have been buying this product for years.

By 

from Arizona

Verified Buyer

Comments about XL 10W-40 Synthetic Motor Oil:

I have use this in my last three vehicles and I will keep using it.

  • How would you describe yourself?:
  • I love my vehicles / toys
 
5.0

Boosted

By 

from VA

Verified Buyer

Comments about XL 5W-20 Synthetic Motor Oil:

Use this in our Acura tsx oil consumption much better better cold starts in 32+ to -5. Awesome product

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • Several
 
5.0

Great synthetic oil

By 

from Toronto

Verified Buyer

Comments about XL 5W-30 Synthetic Motor Oil:

Use the product in all of my cars. Have used the Amsoil since the vehicles were new and the vehicles engines still run like they were new! I highly recommend Amsoil to all vehicle owners.

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • 3 vehicles and a boat
 
4.0

Good stuff

By 

from Columbia SC

Verified Buyer

Comments about XL 5W-30 Synthetic Motor Oil:

I haven't tried the new boosted formula yet but I have had no problems with the product the only thing I would like to see improve is the container I keep a quart bottle in the car with me due to a small oil leak I have and the bottle top leaked oil on to my carpet. This is nit picky I know but it's the only thing..

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • 2005 Chevy aveo
 
5.0

XL for the ES330

By 

from Suffolk, VA

Verified Buyer

Comments about XL 5W-30 Synthetic Motor Oil:

I drive about 1000 miles a week as a Courier and I want ed an oil that would last up to 10k miles. So I gave Amsoil
5-w30 XL a try and when I drained the oil around 10 to 12K, the oil still had good lubrication despite the for change. I recommend trying it and you will not be dissapointed in my opinion.

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • 2005 Lexus ES330
 
4.0

Comes out Dark

By 

from Toledo Ohio

Verified Buyer

Comments about XL 0W-20 Synthetic Motor Oil:

Comes out very dark for a new engine.

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • Mazda 6 2016, 2004 Mazda MX5, F150 2003
 
5.0

I will buy this again

By 

from Monroe, Ga

Verified Buyer

Comments about XL 5W-30 Synthetic Motor Oil:

I enjoy it. Good peace of mind knowing my truck has good oil in it.

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • vehicles, boat, mower, log splitter

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