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Motor Oil Test and Comparison

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

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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AMSOIL Built-In Additives Improve Motor Oil Performance

The superior quality of AMSOIL synthetic lubricants doesn't require catchy marketing terms to grab your attention.

Dan Peterson, Vice President, AMSOIL Technical Development

Dan Peterson
Vice President,
Technical Development

Most people aren't drawn to chemistry, and the majority of people would rather do many other things before sitting down to have a really engaging discussion around polymer science. My wife is a perfect example. Sometimes, when I get home from work, I share a little bit of my day and talk about an exciting new technology with her. She listens pretty well, but the last time I talked with her about some intriguing dispersant research, she said that she would rather be at the dentist's office. Honestly, I never would have guessed that a dentist would know more about lubrication science than a lubrication guy!

While I find chemistry fascinating, I admit I'm in the minority. That's why many oil companies coin catchy terminology to describe the chemistry of their motor oils. You've no doubt seen the ads on TV or encountered labels at the auto parts store that tout "Liquid Titanium*" protection or "Titanium Fluid Strength Technology.*" One oil company informs consumers its motor oil contains "Synerlec*," which is its proprietary additive technology. Then there's "Magnatec*" and its "intelligent molecules." We could go on.

To some, this terminology evokes technological advancement and exclusivity. It attempts to strike an emotional chord and helps convince motorists they're providing their vehicles a special level of protection unavailable elsewhere.

What excites us at AMSOIL is designing, formulating and testing unique chemistries that provide the best engine protection and performance possible in motor oil. We don't use catchy slogans to identify the design, additives, formulations or testing behind our products. We instead build on the AMSOIL brand and try to earn our stripes every day through hard work, smart decisions and an unwavering commitment to quality. No bells, no whistles - just outstanding performance that helps motorists get the most out of their vehicles and equipment.

At the risk of sending some of you to the dentist's office, I'd like to explain how specific motor oil properties affect your vehicles and equipment.

Motor oils are comprised of many different components, but in two fundamental categories: base oils and additives. Using synthetic base oils is a good start, but without the right additives in the correct combinations, synthetic base oils alone cannot fulfill the requirements of an engine.

Additives generally enhance the base oil's beneficial properties by, for example, resisting oxidation, corrosion or foam. They impart new properties by providing benefits like extreme-pressure wear protection and added detergency for improved cleanliness. And they reduce the base oil's negative properties by, for example, lowering the pour point or increasing the viscosity index.

Viscosity index improvers (VII) are a good example. They paved the way for the multigrade oils common today, allowing, for example, a 5W-30 oil to deliver the fluidity of an SAE 5W oil when cold and the stability of an SAE 30 oil when at operating temperature, providing the best of both worlds.

Other common additives include the following:

Oxidation Inhibitors - improve oil service life, reduce viscosity increase and formation of deposits and sludge

Detergents – minimize deposit formation in high-temperature areas of an engine

Dispersants – help suspend solid contaminants within the lubricant to prevent sludge, varnish and other deposits

Corrosion Inhibitors – form a protective film on metal surfaces, protecting them against chemical attack

Anti-Wear – provide a sacrificial wear surface to prevent metal-to-metal contact

Friction Modifiers – improve lubricity and maximize fuel economy

Anti-Foaming Agents – reduce surface tension of air bubbles, resulting in more rapid breakdown of bubbles

Today, additives make up as much as 30 percent of a motor oil's formulation. Modern additive systems can be sensitive to specific materials and negatively affected by the addition of other chemicals. Therefore, AMSOIL doesn't recommended mixing lubricants. You should also avoid using aftermarket additives that promise improved wear protection, fuel economy or other benefits. They're unnecessary in AMSOIL synthetic motor oils and
can disrupt their precisely balanced formulations.

Don't expect AMSOIL to market Amalec, Synerzoil or Tungsten-Enfused Oil anytime soon. Do expect to see more proof of superior performance and value in AMSOIL synthetic motor oils. Published, AMSOIL Magazine 09/15.

AMSOIL Signature Series Synthetic Motor Oil

AMSOIL Signature Series Synthetic Motor Oil

AMSOIL Signature Series Synthetic Motor Oils are formulated to meet the latest API SN Resource Conserving and ILSAC GF-5 industry specifications. AMSOIL Signature Series Oils include 0W-20, 0W-30, 5W-30 and 10W-30 and represent the very best motor oils AMSOIL has to offer, allowing motorists to take advantage of maximum extended drain intervals. AMSOIL Signature Series Synthetic Motor Oils are recommended for drain intervals of up to 25,000 miles/one year, whichever comes first (15,000 miles/one year in severe service conditions).

Click here for more information

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.



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AMSOIL Synthetic Diesel Oil Articles and Testimonials

"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.

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