AMSOIL Signature Series 0W-40 Synthetic Motor Oil
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Signature Series 0W-40 Synthetic Motor OilHelp

Signature Series 0W-40 Synthetic Motor Oil Product Image
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$12.45 Retail Price (USD)
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Product Code: AZFQT-EA
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AMSOIL Signature Series Synthetic Motor Oil is engineered to outperform conventional and synthetic motor oils. It combines industry-premier synthetic technology with AMSOIL premium additives in a unique formulation that exceeds the higher performance demands of modern engines. Signature Series delivers the performance and value upon which the AMSOIL reputation is built. The culmination of more than 40 years of expertise, its exclusive formulation raises the bar for motor oil performance.

AMSOIL, the leader in automotive synthetic lubrication, produced the world’s first API-qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL, the First in Synthetics®, to do the best job protecting your engine.

Protects Your Engine
AMSOIL Signature Series Synthetic Motor Oil provides outstanding anti-wear protection. It develops a strong fluid film that keeps metal surfaces separated while its robust anti-wear additives further reduce wear in metal-to-metal contact regions for maximum engine life. In the industry-standard Sequence IIIG Engine Test, AMSOIL Signature Series Synthetic Motor Oil delivered 75 percent more engine protection against horsepower loss and wear than required by a leading industry standard.** For details, see the Double-Length Sequence IIIG Engine Test Technical Study (G3320).

Maximizes Fuel Economy
Signature Series Synthetic Motor Oil is designed to maximize energy efficiency for optimum fuel economy. Unlike conventional oils, its uniform molecular structure helps it flow more freely and reduce friction between metal surfaces. Anti-friction additives are included to further improve energy efficiency.

Extends Drain Intervals
AMSOIL Signature Series Synthetic Motor Oil can extend drain intervals far beyond those recommended for conventional oils. Its unique synthetic formulation and long-drain additive system are inherently stable to resist oxidation and neutralize acids over longer periods. Signature Series is designed to deliver outstanding engine protection, cleanliness and performance over extended drain intervals. It reduces vehicle maintenance and waste oil.

Keeps Pistons Clean
Excess piston deposits can lead to pre-ignition and engine knocking, which results in lost power, reduced fuel economy and, in severe cases, engine damage. Signature Series’ premium additives and naturally high resistance to extreme heat help keep pistons clean for maximum engine performance. Signature Series prevents piston deposits 93 percent better than required to meet the latest API standard.**

Sequence IIIG

Excels in Extreme Temperatures
Signature Series resists thermal (heat) breakdown better than conventional and synthetic motor oils. It is heavily fortified with detergent and dispersant additives to help prevent sludge deposits and keep engines clean. Unlike conventional oils, Signature Series contains no wax, staying fluid in sub-zero temperatures for easier starting, improved oil flow and reduced wear.

Reduces Oil Consumption and Emissions
Volatility (burn-off) occurs when oil gets hot, causing high oil consumption and emissions. Signature Series resists volatility better than other oils, helping reduce oil consumption and emissions.

APPLICATIONS
AMSOIL Signature Series Synthetic Motor Oil is excellent for use in all types of gasoline-fueled passenger cars and light trucks. It is recommended for all domestic and foreign vehicles requiring any of the following performance specifications:

0W-40 (AZF): API SN, SM…; Chrysler MS-12633, MS-10725, MS-10850; Nissan GT-R®

*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 AMSOIL-engineered for use in the applications shown.

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

Aftermarket oil additives are not recommended for use with AMSOIL synthetic motor oils.

SERVICE LIFE

  • Normal Service – Up to 25,000 miles, 700 hours of operation or one year, whichever comes first, in personal vehicles not operating under Severe Service.
  • Severe Service – Up to 15,000 miles, 700 hours of operation or one year, whichever comes first.

Severe Service: Primarily short trips (less than 10 miles [16 km]); turbo/supercharged engines; commercial or fleet vehicles; excessive idling; first-time use of AMSOIL motor oil in a vehicle with more than 100,000 miles; frequent towing, hauling, plowing or driving in dusty conditions.

  • Modified engines (non-stock) and those using E85 fuel are excluded from extended drain recommendations.
  • Change at the vehicle manufacturer’s recommended drain interval outside U.S. and Canada.
  • AMSOIL Ea® Full-Flow Oil Filters are designed for extended change intervals. With other brands, do not exceed six months or 10,000 miles unless longer intervals are recommended by the vehicle manufacturer.
  • Check oil regularly to maintain proper fill levels.

AMSOIL Ea® Full-Flow Oil Filters are designed for extended change intervals. They stop smaller particles, flow more oil and last longer than regular filters. For best performance, use AMSOIL Ea Full-Flow Oil Filters.

AMSOIL PRODUCT WARRANTY
AMSOIL products are backed by a Limited Liability Warranty. For complete information visit www.amsoil.com/warranty.aspx.

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. Don’t pollute. Return used oil to collection centers.

For warranty information, visit www.amsoil.com/warranty.aspx.

AZF Package Sizes
Code Package Size Unit of Measure Product
AZFQT (AZFQT-EA) Quart Each Signature Series 0W-40 Synthetic Motor Oil
AZFQT (AZFQT-CA) Quart Case of 12 Signature Series 0W-40 Synthetic Motor Oil
AZF55 (AZF55-EA) 55-Gallon Drum Each Signature Series 0W-40 Synthetic Motor Oil
More about AMSOIL Reviews

REVIEW SNAPSHOT®

by PowerReviews
AMSOILSignature Series 0W-20 Synthetic Motor Oil
 
4.9

(based on 740 reviews)

Ratings Distribution

  • 5 Stars

     

    (714)

  • 4 Stars

     

    (19)

  • 3 Stars

     

    (2)

  • 2 Stars

     

    (2)

  • 1 Stars

     

    (3)

99%

of respondents would recommend this to a friend.

Pros

No Pros

Cons

No Cons

Best Uses

No Best Uses
    • Was this a gift?:
    • No (4)

Most Liked Positive Review

 

First time running Amsoil

I changed to amsoil from gm dexos as I wanted something better for my Cruze. After 10k of running dexos as it was included with the car, I switched to amsoil and immediately noticed...Read complete review

I changed to amsoil from gm dexos as I wanted something better for my Cruze. After 10k of running dexos as it was included with the car, I switched to amsoil and immediately noticed the engine running quieter than with dexos. I am happy with the change so far and am looking forward to see how it holds up as I only have 1500 miles on it so far. We'll see what happens when I get into my second oil change.

VS

Most Liked Negative Review

 

Not worth the hoops you have to jump through

The oil is good, but with the membership fee and high shipping costs I am going back to Mobile 1 as I did not see much if any of a difference. There is just...Read complete review

The oil is good, but with the membership fee and high shipping costs I am going back to Mobile 1 as I did not see much if any of a difference. There is just to many hoops they make you jump through. There should just be a cost to buy it and no membership fee that AMS Oil makes people think they are locked in to buying oil from them so they can "get the most of the membership". I think most people find annoying and just go buy another oil rather than pay high prices on top of shipping and also a fee just to buy it at a reasonable price.

Reviewed by 740 customers

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5.0

LOVE IT

By 

from Memphis, TN

Verified Buyer

Comments about Signature Series 0W-20 Synthetic Motor Oil:

I used this oil in my 2013 Toyota FJ Cruiser, which I use as my off-road vehicle and my daily driver. Compared to the other most recommended oil in my community, I found Amsoil to perform better. You may ask how I know it performs better. Well, I have been working on my family's cars since I was 13, so for about 33 years. I live where temps range from wind chill of -20F to heat index of 115F, and some days in the year the actual high between two days will change 40F. So how do I know it performs better? I can hear it, and I can feel it. I know that sounds silly, but growing up with a car that broke down 40 times in the first 4 years that I had it, I became very in tune to the sounds and feel of vehicles. Amsoil engine oil made my engine run quieter (on a 40,000 mile engine) and smoother (feel it in the pedal and floor vibrations from the engine bay).

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • 2013 Toyota FJ Cruiser - 4WD
 
5.0

This is the only Oil I have used for many years.

By 

from Bolivia, NC

Verified Buyer

Comments about Signature Series 5W-30 Synthetic Motor Oil:

I use Amsoil ONLY in my truck, car, Harley, and outboard engines!

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • GMC Truck, Ford Thunderbird, Harley, Yam
 
5.0

Amazing product, very reliable

By 

from Los Angeles, CA

Verified Buyer

Comments about Signature Series 0W-20 Synthetic Motor Oil:

Since the day I first put this oil in my car's engine, never had any grinding or locking issues. Amazing product. Very reliable. Orders get shipped on time and arrive on time. Won't go wrong with using this fine line of synthetics.

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • 15' Civic Si
 
5.0

ONE YEAR OIL

By 

from NEW ALBANY INDIANA

Verified Buyer

Comments about Signature Series 5W-30 Synthetic Motor Oil:

MY FAMILY ALSO USES IT HOW ABOUT THAT

  • How would you describe yourself?:
  • I use AMSOIL products for my business
  • What kind of vehicle/equipment do you have?:
  • DODGE DAKTOA
 
5.0

I buy this product every year.

By 

from Marion, KS

Verified Buyer

Comments about Signature Series 5W-30 Synthetic Motor Oil:

I use the oil filter and the 25,000 mile oil for the mileage listed or once a year, whichever comes first.
The once a year always comes first for me.
Thanks for such a good oil.

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

Best all around products

By 

from Dallas

Verified Buyer

Comments about Signature Series 5W-20 Synthetic Motor Oil:

Put in son's power equipment and all of a our Harley Davidsons plus our Roush Supercharged Pickup.

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • HD Road Glide with engine upgrades, Audi
 
5.0

Great oil!

By 

from Evanston, IL

Verified Buyer

Comments about Signature Series 5W-30 Synthetic Motor Oil:

Bought the oil. Best purchase decision ever. Engine is purring like a kitten, with the best mph ever.

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • 2007 Mazda CX-7
 
5.0

Great Product

By 

from Morristown

Verified Buyer

Comments about Signature Series 5W-20 Synthetic Motor Oil:

Would buy again

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

I'm relying on the reputation!

By 

from Fredericksburg, Va

Verified Buyer

Comments about Signature Series 5W-30 Synthetic Motor Oil:

I only came to know and use Amsoil from the previous user of my Nissan Titan. He stated he had used Amsoil in it after he bought it. Not wanting to change to a different oil even though I had always use Castrol or Mobile 1, I decided to check on this Amsoil oil he was using. I have to tell you I truly believe this has to be a better oil then what had been using in my last 45 years of driving! With all the testing that Amsoil does on their oil and what it goes in really impresses me at they know oil and they really truly know synthetic oil! I am proud to display my Amsoil sticker on my back windshield of my truck knowing that I am part of a elite group of guys that are wanting the best oil for their engines!

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • 2005 Nissan Titan, 97 Cadillac Eldorado
 
5.0

Proven benefits

By 

from USA

Verified Buyer

Comments about Signature Series 5W-30 Synthetic Motor Oil:

I've been using this AMSOIL for several years now. I saw immediate improvements in my daily commuter just from switching to their oil & filter

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • Honda Civic/Hyundai Santa Fe/Triumph SP3

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