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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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Motor Oil Quality Evolves With Engine Technology

The history of lubrication can be traced back as far as the very beginning of transportation. Until the 19th century, lubricants were primarily composed of animal fats and vegetable oils, but a new means of lubrication and a whole new industry were born when the first crew successfully drilled for oil in 1859.

Early on, viscosity was identified as one of the most important characteristics of a motor oil, and oils were divided into light, medium and heavy viscosity classes. As soon as instruments capable of measuring viscosity were introduced, the Society of Automotive Engineers (SAE) developed a complete viscosity classification system, which included 11 different viscosity grades. Viscosity modifiers allowed manufacturers to begin developing multi-grade oils in 1945.

Engine technology has improved dramatically over the years, increasing the protection and performance required of motor oils. In order to meet public demand for vehicles with greater fuel economy during the oil embargo of the 1970s, automobile manufacturers produced smaller, lighter cars powered by smaller and more efficient engines. When fuel injection became common in gasoline fueled engines, it placed even greater demand on the vehicle's engine oil as it was required to flow and reach critical components as quickly as possible.

In today's world, high fuel prices and environmental concerns have driven up demand for high-performance, fuel efficient, environmentally friendly vehicles. To meet this demand, vehicle manufacturers have produced more aerodynamic cars with reduced air flow through the engine. Although these vehicles are more fuel efficient, they exhibit higher engine operating temperatures than earlier automobiles, putting even greater stresses on the engine oil in the areas of oxidation stability, deposit prevention and wear protection.

Established in 1970, the API Engine Service Classification System (ESCS) was designed to classify oils according to their performance characteristics and type of service. In 1993, the API Engine Oil Licensing and Certification System (EOLCS) was launched, a voluntary program which allows marketers who meet the minimum performance requirements to mark their oil containers with the API certification marks.

API service categories for gasoline engines are comprised of two letters. The first letter is "S" for "service," and the second letter is assigned alphabetically according to order of development. Thus, the first service category of "SA" is the earliest, while the latest is "SM." Because each new service category exceeds the performance requirements of the previous category, oils meeting the current API specification are suitable for use in all vehicles calling for an older specification.

The introduction of AMSOIL Synthetic Motor Oil in 1972 set all new standards for motor oil quality and performance, becoming the first 100 percent synthetic based motor oil to pass American Petroleum Institute (API) service requirements. AMSOIL continues to lead the way in the synthetic market, offering motorists the ultimate in wear protection, all-temperature performance, maximum fuel efficiency and extended drain intervals.

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


Why is AMSOIL Synthetic Oil Better?

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"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."


FULL WARRANTY


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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Which AMSOIL Products Are Recommended For Your Car or Truck?
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What Drain Interval Does AMSOIL Recommended For Your Vehicle?
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