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AMSOIL vs. Mobil 1

409,000-Miles Without An Oil Change

AMSOIL Excels in API Sequence IIIF Performance Test

Motor Oil Performance Tests & Comparisons

Temperature Extremes Call For Superior Motor Oils

Why Harley-Davidson Owners Choose AMSOIL

Synthetic Motorcycle Oil & Harley-Davidson Warranty Issues

AMSOIL Synthetic Gear Lube Outperforms Valvoline Gear Lube

Motor Oil Test and Comparison

8.2% More MPG With AMSOIL Synthetic Lubricants

AMSOIL Proves Superior In Clark County Field Test

AMSOIL Series 3000 Synthetic 5W-30 Heavy Duty Diesel Oil is Correct Choice for Jeff Foster Trucking

AMSOIL Products Improve Efficiency and Reduce Operating Costs for Gerlach Trucking

What is the Noack Volatility Test?

What is the Four-Ball Wear Test?

What is TBN?


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Buy AMSOIL at Wholesale Prices AMSOIL Synthetic Gasonline Motor Oils AMSOIL Synthetic Diesel Motor Oils
AMSOIL Synthetic European Motor Oils AMSOIL Synthetic Racing Motor Oils AMSOIL Synthetic Motorcycle Motor Oils
AMSOIL Synthetic 2-Stroke Motor Oils AMSOIL Synthetic 4-Stroke Motor Oils AMSOIL Synthetic Tansmission Fluids
AMSOIL Synthetic Gear Lubes AMSOIL Synthetic Greases AMSOIL Synthetic Hydraulic Oils
AMSOIL Synthetic Compressor Oils AMSOIL Gasoline Fuel Additives AMSOIL Diesel Fuel Additives
AMSOIL Filtration Products AMSOIL Other Products Buy AMSOIL at Wholesale Prices

Which AMSOIL Products Are Recommended For Your Vehicles?

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AMSOIL Tech Talk. Articles About Synthetic Lubricants and Modern Automotive Technology

Three Primary Factors Are Normally Responsible For Oil Failure (12/15)

Modern Two-Stroke Engines Require Advanced Oil (11/15)

TGDI Engines Projected To Dominate New Vehicle Sales By 2020 (10/15)

AMSOIL Built-In Additives Improve Motor Oil Performance (09/15)

AMSOIL Synthetic Lubricants Resist Sludge Better Than Conventional Oils (08/15) 

The Rotary Screw Compressor Market Can Be Confusing (07/15)

AMSOIL Product Guides Provide Tremendous Value (06/15)

New Diesel Oil Specifications Are Coming (05/15)

AMSOIL Synthetic Compressor Oils are Designed to Handle Severe Environments (04/15)

Coolant Systems Require Regular Maintenance (03/15)

AMSOIL Oil Service Life Determined In Various Ways (02/15)

AMSOIL Pushing The Boundaries Of Lubrication Science (01/15)

AMSOIL Oil Analysis Can Provide Tremendous Value (12/14)

Fuel System Maintenance Is Essential In Modern Engines (11/14)

Coolant's Main Job Is To Transfer Heat (10/14)

Lighter Viscosity Motor Oils Becoming More Prevalent (9/14)

There Is More To Lubrication Than Simply Reducing Friction (8/14)

AMSOIL Quality Products Are The Result Of Focused Effort (7/14)

AMSOIL Quality Control Measures are Thorough and Extensive (6/14)

Most Powersports Engine Problems Are Either Mechanical, Fuel-Related or Due To Neglect (5/14)

AMSOIL New Low Cost Oil Analysis Option Offers Great Value (4/14)

AMSOIL Synthetic Lubricants Excel In Temperature Extremes (3/14)

Reducing Friction Is An Oil's Primary Function (2/14)

AMSOIL Synthetic Lubricants Deliver Maximum Fuel Efficiency (01/14)

ZDDP Zinc Dialkyldithiophosphate Provides Proven Wear Protection (12/13)

AMSOIL Engine Flush Provides Immediate Engine Sludge and Debris Removal (11/13)

Stored Equipment Requires Preparation to Ensure It's Protected (10/13)

Quality Filtration is Equally as Important as Quality Lubrication (09/13)

Emerging Technologies Will Improve Fuel Economy and Challenge Lubricants (08/13)

Corrision Attacks Vehicles Inside and Out (07/13)

Don't Overlook Greased Components (06/13)

Variable Valve Timing Presents Yet Another Complexity For Motor Oils to Overcome (05/13)

Natural Gas is an Up-and-Coming Alternative to Gasoline and Diesel (4/13)

Change Your Motor Oil Once A Year, But Check It More Often (3/13)

Direct Injection Brings Diesel Technology to Gasoline Engines (2/13)

Oil Additives Can Offset the Careful Balance of a Well-Formulated Motor Oil (1/13)

High Quality Oil Is Necessary To Keep Cold Weather Hydraulic Applications Operational (12/12)

SAPS Levels Are An Important Differentiator In European Specifications (11/12)

Diesel Fuel Quality Can Vary Greatly From One Location To The Next (10/12)

CVT and eCVT Transmission Technology Differ Greatly (09/12)

Emissions Control Systems Place Unique Demands On Diesel Oils (08/12)

Automotive Oil And Motorcycle Oil Are Not The Same (07/12)

E15 Fuel Has Been Approved For Sale (06/12)

Chemical Reactions Occur In Motor Oil, Even When Not In Use (05/12)

AMSOIL Grease Consists of Base Oils, Additives and Thickeners (04/12)

Driving Habits Affect Synthetic Motor Oil Drain Intervals (03/12)

There are Four Basic Types of Engine Wear (02/12)

Winter Fuel Problems Can Leave You Stranded (01/12)

Two-Stroke Specifications Differ Greatly From Their Four-Stroke Counterparts (12/11)

Regular Maintenance Is Still Necessary When Extending Oil Drain Intervals (11/11)

Your Oil-Life Monitoring System Is Not An On-Board Chemist (10/11)

Engine Technologies Present New Benefits and Challenges (08/11)


Why is AMSOIL Synthetic Oil Better?

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Motorcycle Testimonials

Business Opportunity Testimonials

From The Presidents Desk

AMSOIL Synthetic Diesel Oil Articles and Testimonials

Why Motor Oil Deteriorates

It is common knowledge that, at some point, engine oil must be changed. It's something that is preached relentlessly to vehicle owners by vehicle manufacturers, quick lubes and oil companies. But consumers are widely unaware of what exactly makes oil changes necessary.

Many factors contribute to a motor oil's demise, but it is essentially the accumulation of contaminants in the oil and chemical changes in the oil itself that make a motor unfit for further service. With time, it is inevitable that the oil will be contaminated by dirt or sludge, or succumb to the extreme pressures or temperatures found inside an engine. AMSOIL Motor Oils are formulated with the industry's most advanced synthetic base stocks and additive packages to combat the forces that deteriorate conventional oils. (read more)

What is the NOACK Volatility Test?
Volatization is a term used to describe what happens to a fluid as it is heated to the point it begins to "boil off." Upon reaching a certain temperature, oil will begin to lose some of its lighter weight molecules as they "boil off" and leave heavier weight molecules behind. Not only does this cause higher oil consumption, this process can also cause increased viscosity making the oil more difficult to circulate through the lubrication system. (read more)

Quality Takes Priority at AMSOIL

The AMSOIL chemical laboratory plays an important role in the daily operations at AMSOIL headquarters. The lab fulfills tech service requests, performs competitor testing and comparisons, and works on the research and development of products at AMSOIL. One of the most important jobs at the lab is quality control. AMSOIL is known for formulating high-quality products and the AMSOIL chemists ensure that everything coming in and going out meets AMSOIL standards. How do they do it? (read more)

Premium AMSOIL Synthetic Motor Oils offer the longest drain intervals on the market, unsurpassed protection and performance that effectively extends equipment life and improved fuel economy, saving customers money at the pump and reducing the nation's dependence on foreign oil.

"AMSOIL INC. warrants that the use of its lubricants will not cause mechanical damage to any mechanically sound equipment when AMSOIL INC. products are used in full compliance with the company's recommendations and instructions."


AMSOIL synthetic motor oils are formulated to surpass engine test specifications, offering protection far greater than competing motor oils for extended drain intervals. Most synthetic oil manufacturers make no claim to extended drain intervals, deferring to the maintenance schedule provided by the vehicle manufacturer. With its unparalleled oil and warranty program, AMSOIL offers consumers unprecedented protection and economics.

Another AMSOIL First

More than 20 years ago, AMSOIL began using the NOACK volatility test as a comparison tool and measurement of quality. Back then, nearly every oil tested side-by-side with AMSOIL synthetic motor oils failed, and those that passed barely squeaked by. Other oil companies paid no attention to NOACK results until Ford Motor Company made it a requirement for service fill oils, validating what AMSOIL had said all along.

THE NOACK Volatility Test
The NOACK Volatility Test determines the evaporation loss of lubricants in high temperature service. The more motor oils vaporize, the thicker and heavier they become, contributing to poor circulation, reduced fuel economy and increased oil consumption, wear and emissions. AMSOIL Synthetic Motor Oil resists high temperature volatization better than other motor oils. AMSOIL Synthetic Motor Oil maintains peak fuel efficiency and reduces oil consumption and emissions.

AMSOIL Now An ISO Certified Manufacturer
AMSOIL recently received ISO 9001:2000 certification of our Quality Management System (QMS). NSF International Strategic Registrations is the registrar that has verified our QMS meets the requirements of the ISO 9001:2000 standard, the most widely utilized quality standard throughout the world for quality management systems. ISO standards are used by over 300,000 companies worldwide setting rigorous standards for businesses, government and industry.

ISO 9001:2000 is applicable to any manufacturing and service organization providing a framework for system development that focuses on the customer, quality system performance and ongoing improvement. AMSOIL received ISO 9001:2000 registration under the scope: synthetic lubricants blending, packaging, and other fulfillment directly associated with lubricant product.

The ISO certification puts AMSOIL in line with some of the most efficient companies in the world. It is further assurance that the products and services AMSOIL provides will continue to maintain the high level of quality the company always demanded.

AMSOIL Product Information

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