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AMSOIL vs Mobil 1

AMSOIL vs Royal Purple vs Lucas Oil

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Motorcycle Products

Motorcycle Oils

Motorcycle Air/Oil Filters

Motorcycle Suspension Fluids

Motor Oils

Racing Motor Oils

Diesel Oils

Oil Filters

Air Filters

2-Cycle Oils

4-Stroke Oils

Gear Lubricants

Racing Gear Lubricants

Transmission Fluids

Fuel Additives

Brake Fluid

Power Steering Fluid

Greases

Hydraulic Oils

Compressor Oils

Wiper Blades

Spark Plugs/Wire Sets

Antifreeze

Protectants

Cleaners/Degreasers

Industrial Products

AMSOIL vs. Mobil 1

AMSOIL vs Royal Purple vs Lucas Oil

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?

Frequently Asked Questions

Articles

Free Catalog

Dealers Needed

Buy AMSOIL at Wholesale Prices
Become A Preferred Customer

Frequently Asked Questions

Satisfied Customers

Motorcycle Products

Motorcycle Oils

Motorcycle Air/Oil Filters

Motorcycle Suspension Fluids

Motor Oils

Racing Motor Oils

Diesel Oils

Oil Filters

Air Filters

2-Cycle Oils

4-Stroke Oils

Gear Lubricants

Racing Gear Lubricants

Transmission Fluids

Fuel Additives

Brake Fluid

Power Steering Fluid

Greases

Hydraulic Oils

Compressor Oils

Wiper Blades

Spark Plugs/Wire Sets

Antifreeze

Protectants

Cleaners/Degreasers

Industrial Products


AMSOIL was the first oil company to develop an API rated 100 percent synthetic motor oil for automotive use - before Mobil 1, Valvoline, Quaker State, Pennzoil, Redline, Royal Purple

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AMSOIL Synthetic Motor Oils


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).

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Why is AMSOIL Synthetic Oil Better?

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AMSOIL OE Synthetic Motor Oil

AMSOIL OE Synthetic Motor Oil

AMSOIL OE Synthetic Motor Oil is specially formulated for the longer oil change intervals recommended by vehicle manufacturers today. Its advanced synthetic technology resists chemical breakdown for maximum wear protection (and peace of mind) well beyond the traditional 3,000-mile oil change interval.

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AMSOIL XL Extended Life Synthetic Oil

AMSOIL XL Extended Life Synthetic Motor Oil

AMSOIL XL Extended Life Synthetic Motor Oils provide better wear control, high- and low-temperature protection and increased fuel economy compared to conventional oils. Formulated with extended-drain boost technology, AMSOIL XL Synthetic Motor Oils provide superior performance for up to 10,000-miles/six months, or longer when recommended in owner’s manuals or indicated by electronic oil life monitoring systems.

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AMSOIL European Car Synthetic Motor Oil

AMSOIL European Car Formula 5W-30 Synthetic Motor Oil

AMSOIL European Car Formula 5W-30 Synthetic Motor Oil provides exceptional performance and protection for high-performance European vehicles made by Volkswagen, Audi, Mercedes-Benz, BMW, Porsche and more. Its low-viscosity formulation maximizes fuel efficiency without compromising engine protection, while meeting strict European performance requirements for gasoline and direct-injection diesel engines designed for low-viscosity oils.

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AMSOIL Synthetic 5W-40 European Engine Oil

AMSOIL 100% Synthetic 5W-40 European Engine Oil

Formulated for the needs of European gasoline cars and light trucks. Blended with a broad 5W-40 viscosity rating. Allows for the maximum extended drain intervals recommended while providing superior protection and performance.

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AMSOIL 10W-40 Synthetic Motor Oil

AMSOIL SAE 10W-40 Synthetic Premium Protection Motor Oil

For use in both gasoline and diesel engines. Offers multi-functionality and wear protection. Ideal for applications where the extra protection of a higher-viscosity oil is desired. Excellent for motor homes and older vehicles, as well as many types of modern equipment and compatible with some motorcycles.

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AMSOIL 20W-50 Synthetic Motor Oil

AMSOIL SAE 20W-50 Synthetic Premium Protection Motor Oil

For use in both diesel and gasoline engines. Ideal for applications where the extra protection of a higher-viscosity oil is desired. The higher viscosity may help reduce motor oil consumption in equipment experiencing higher than normal oil usage rates while running lower viscosity lubricants.

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AMSOIL Z-ROD High Zinc Synthetic Motor Oil

AMSOIL Z-ROD 5W-30 and 20W-50 High Zinc Synthetic Motor Oil

AMSOIL Z-ROD™ Synthetic Motor Oil is specially engineered for classic and high-performance vehicles. A high-zinc formulation to prevent wear on flat-tappet camshafts and other critical engine components, along with a proprietary blend of rust and corrosion inhibitors for added protection during long-term storage.

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AMSOIL Dominator Synthetic Racing Oil

AMSOIL Dominator Synthetic Racing Oil

Excellent for use in high RPM, high temp racing and high-performance applications under severe conditions. Ensures critical engine components are protected for the duration of the race. Reduces friction for max power and cooler engine temperatures, resulting in improved lap times and longer-lasting equipment.

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AMSOIL P.i. Performance Improver Gasoline Additive

AMSOIL P.i. Performance Improver Gasoline Additive

P.i. improves fuel mileage an average of 2.3% and up to 5.7%. Reduces emissions such as hydrocarbons (HC) up to 15%, carbon monoxide (CO) up to 26% and nitrous oxides (NOx) up to 17%. Restores power and performance. Reduces the need for costly higher octane fuel.

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AMSOIL Oil Air Filters

AMSOIL Ea Automotive and Truck Oil Filters

Ea Oil Filters feature advanced full-synthetic nanofiber technology and rank among the most efficient filters available for the auto/light-truck market. When used in conjunction with AMSOIL synthetic motor oils, AMSOIL Ea Oil Filters are guaranteed for extended service life.

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AMSOIL Synthetic Motor Oils Page

AMSOIL Synthetic Motor Oil Articles

AMSOIL Automotive Products Page


AMSOIL Synthetic Diesel Oils


AMSOIL CJ-4 Premium Synthetic Diesel Oil

AMSOIL Premium API CJ-4 Synthetic 5W-40 Diesel Oil

The premium choice diesel oil for model-year 2007 and newer heavy-duty and pickup truck diesel engines requiring API CJ-4 emission-quality oil standards. Delivers extraordinary lubrication in diesel engines in commercial, fleet and personal applications. Exceeds modern specs for emission-quality diesel oil.

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AMSOIL CJ-4 Premium Synthetic Diesel Oil

AMSOIL Premium API CJ-4 Synthetic 15W-40 Diesel Oil

The premium choice diesel oil for model-year 2007 and newer heavy-duty and pickup truck diesel engines requiring API CJ-4 emission-quality oil standards. Delivers extraordinary lubrication in diesel engines in commercial, fleet and personal applications. Exceeds modern specs for emission-quality diesel oil.

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AMSOIL 15W-40 Synthetic Diesel Oil

AMSOIL SAE 15W-40 Heavy-Duty Diesel and Marine Motor Oil

Engineered for pre-2007 diesel engines in on-road applications as well as all model year diesel engines in off-road applications. High 12 TBN controls acids from combustion blow-by and EGR. Additives control soot thickening, oxidation and wear. Extended drain capabilities reduce downtime and motor oil expenses.

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AMSOIL OE 15W-40 Synthetic Diesel Oil

AMSOIL OE 15W-40 Synthetic Diesel Oil provides excellent protection and performance in both on- and off-road diesel engines for the original equipment manufacturer's recommended drain interval. It meets API CJ-4 specifications and is suitable for both modern and older diesel applications.

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AMSOIL 5W-30 Synthetic Diesel Oil

AMSOIL Series 3000 SAE 5W-30 Synthetic Heavy Duty Diesel Oil

Engineered for pre-2007 diesel engines in on-road applications as well as all model year diesel engines in off-road applications. Also engineered for all gasoline engines recommending API SL specifications including turbo-charged vehicles. Provides superior wear protection and fuel efficiency.

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AMSOIL 15W-40 Synthetic Blend Diesel Oil

AMSOIL SAE 15W-40 Synthetic Blend Diesel Oil

Engineered for pre-2007 diesel engines in on-road applications as well as all model year diesel engines in off-road applications. High 12 TBN controls acids from combustion blow-by and EGR. Additives control soot thickening, oxidation and wear. Extended drain capabilities reduce downtime and motor oil expenses.

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AMSOIL SAE 30, 10W-30 Synthetic Diesel and Gasoline Engine Oil

AMSOIL Synthetic SAE 10W-30/SAE 30 Heavy-Duty Motor Oil

Exceeds both 10W-30 multi-grade and SAE 30 straight-grade viscosity requirements. Provides outstanding performance in pre-2007 diesel engines in on-road applications as well as all model-year diesel engines in off-road apps. Also recommended for gasoline engines requiring API SL or previous specifications.

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AMSOIL Diesel Fuel Additive Concentrate

AMSOIL Diesel Fuel Additive Concentrate

Total system cleaner and lubricity improver for all types of diesel engines. Improves performance and longevity of diesel engines while reducing deposits, black smoke and emissions. Improves fuel economy by cleaning dirty injectors. Restores horsepower. Designed for heavy-duty diesel engines.

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AMSOIL Air Oil Filters

AMSOIL Ea Diesel Truck Oil Filters

Ea Oil Filters feature advanced full-synthetic nanofiber technology and rank among the most efficient filters available for the diesel truck market. When used in conjunction with AMSOIL synthetic motor oils, AMSOIL Ea Oil Filters are guaranteed for extended service life.

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AMSOIL Diesel Products Page


AMSOIL High Performance Synthetic Motorcycle Oils


AMSOIL 10W-30 Synthetic Motorcycle Oil

AMSOIL Synthetic 10W-30 Motorcycle Oil is a premium oil designed for those who demand the absolute best lubrication for their motorcycles. AMSOIL MCT is the result of extensive research, and it is specially formulated to excel in all areas unique to motorcycles, including high engine RPM, wet clutch lubrication, extreme pressure regions of gears and rust common to short drives and storage. Product Code: MCT (more info)

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AMSOIL 10W-40 Synthetic Motorcycle Oil

AMSOIL 10W-40 Synthetic Motorcycle Oil

AMSOIL Synthetic Motorcycle Oils have been reformulated with new high performance additive technology that provides even greater multi-functional benefits for the special requirements of motorcycle applications. These independent and exclusive new AMSOIL formulations provide second-to-none viscosity protection for hot-running American and foreign motorcycle engines, transmissions and primary chaincases. Product Code: MCF (more info)

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AMSOIL 20W-50 Synthetic Motorcycle Oil

AMSOIL 20W-50 Synthetic Motorcycle Oil

AMSOIL Synthetic Motorcycle Oils have been reformulated with new high performance additive technology that provides even greater multi-functional benefits for the special requirements of motorcycle applications. These independent and exclusive new AMSOIL formulations provide second-to-none viscosity protection for hot-running American and foreign motorcycle engines, transmissions and primary chaincases. Product Code: MCV (more info)

See product application notes for Harley Davidson Motorcycles

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AMSOIL SAE 60 Synthetic Motorcycle Oil

AMSOIL SAE 60 Synthetic Motorcycle Oil

AMSOIL Synthetic SAE 60 Motorcycle Oil (MCS) is a premium oil designed for those who demand the absolute best lubrication for their motorcycles. AMSOIL Motorcycle Oil is the result of extensive research, and it is specially formulated to excel in all areas unique to motorcycles, including high engine RPM, wet-clutch lubrication, extreme-pressure regions of gears and rust common to short drives and storage. Product Code: MCS (more info)

See product application notes for Harley Davidson Motorcycles

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AMSOIL 10W-30 Synthetic Motorcycle Oil Product Data Sheet

AMSOIL 10W-40 Synthetic Motorcycle Oil Product Data Sheet

AMSOIL 20W-50 Synthetic Motorcycle Oil Product Data Sheet


AMSOIL Motorcycle Oil Filters

AMSOIL Motorcycle Oil Filters

AMSOIL Ea Motorcycle Oil Filters reflect the newest technological advances in the quest to meet the unique demands of today’s high-stress motorcycle engines. (more info)

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AMSOIL Quickshot Fuel Additive for Harley-Davidson and All Other Motorcycle Engines

AMSOIL Quickshot Motorcycle Fuel Additive

AMSOIL Quickshot SE (AQS) is a premium fuel additive formulated to thoroughly clean and restore peak performance in motorcycle engines, powersports equipment and small engine fuel systems. It also stabilizes fuel between uses and during short-term storage periods. Its revolutionary technology focuses on three major fuel-related issues plaguing small engines and powersports equipment: ethanol, water and dirty pump gas.

Degraded fuel presents a major maintenance issue in motorcycle engines, powersports equipment and small engines. It can form varnish, gum and insoluble debris that clog carburetors, fuel injectors and fuel filters. Carbon buildup can form on the tops of pistons that leads to pre-ignition, rough idling and poor throttle response. Fuel-related problems are only expected to intensify in the coming years as the ethanol content in pump gasoline continues to increase. (more info)

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AMSOIL Ea Absolute Efficiency Air Filters - Nano Fiber Technology

Available for Cars, Trucks and Motorcycles


NOACK Volatility Test is a Critical Measurement of Motor Oil Quality

NOACK Volatility Test AMSOIL vs Royal Purple vs Lucas OilAMSOIL was the first motor oil company in North America to use the NOACK volatility test to measure motor oil quality and performance. Although competing motor oil companies initially paid no attention to NOACK results, the test has since become a critical measurement tool throughout the industry.

Modern engine designs generate more heat than ever, accentuating the importance of the NOACK volatility test for determining an oil’s ability to provide an adequate level of protection and performance. More horsepower, turbo chargers and aerodynamic styling have created extremely hot environments that receive less cooling from outside air, and high heat leads to oil oxidation, deposits and thickening in conventional oils.

Top quality for the current API SM motor oils specification, gasoline motor oils cannot experience a weight loss of more than 15 percent in the NOACK test. AMSOIL Synthetic Motor Oils were exceeding modern requirements over 20 years ago, while many current motor oils still have a hard time meeting this minimal requirement, increasing wear, fuel consumption and emissions.

As seen in the graph, AMSOIL Synthetic Motor Oil easily passes the NOACK Test and falls well below the the maximum 15 percent volatilization (burn off) rate dictated by the API SM motor oil specification, while the Royal Purple volatilization (burn off) rate is over 11 percent and the Lucas Oil FAILS the test with a volatilization (burn off) rate of over 40 percent. (read more)


The Myth of the 3,000 Mile Oil Change Interval

AMSOIL represented the lone voice for extended drain intervals in America for over 30 years, recommending 25,000-mile/one-year drain intervals. While extended oil drain intervals have been common in Europe for years, other American motor oil companies have mostly avoided recommending them, preferring instead to stick with 3,000-mile recommended intervals despite the contrasting recommendations of vehicle manufacturers and European motor oil companies.

In fact, Marc Graham, president of Pennzoil-Quaker State-owned Jiffy Lube International, was quoted in a 2001 Lubricants World interview as saying, "At [Pennzoil-Quaker State] we use a number internally that if we [shorten the drain interval] by 100 miles [for each car serviced], it would mean an additional $20 million in revenue for the company." He also explained that "if we could move our customers to get one more oil change per year, it's worth $294 million for the oil change alone and $441 million in revenue, when you include the ancillary products and services customers typically buy along with the oil change."

Today, with vehicle manufacturers recommending longer and longer drain intervals and the increasing use of oil monitoring systems, the practice of extending drain intervals has become more mainstream and forced more motor oil companies to take notice. (read entire article here)

Innovation and Leadership
AMSOIL has a documented history of innovation and leadership. In 1972, AMSOIL introduced the first American Petroleum Institute rated 100% synthetic motor oil for automotive applications. AMSOIL was the first to introduce a concept of "extended drain intervals" with a recommended 25,000-mile/12-month drain interval. Currently, the AMSOIL product line includes the finest quality synthetic motor oils, synthetic diesel oils, gear lubes, synthetic greases, industrial lubricants, oil filters, air filters and automotive performance products.

The Company of Firsts

AMSOIL has a documented history of innovation and leadership.

  • First to develop an API-rated 100 percent synthetic motor oil.
  • First to introduce the concept of "extended drain intervals" with a recommended 25,000-mile/1-year drain interval.
  • First U.S. company to utilize the NOACK volatility test as a standard of performance excellence.
  • First to produce synthetic motor oils for diesel engines, racing engines, turbos and marine engines.
  • First to introduce synthetic oils that legitimately contribute to improving fuel efficiency.
  • First to manufacture synthetic gear lube for automotive use.
  • First to manufacture a 100:1 pre-mix synthetic 2-cycle oil.
  • First to manufacture a synthetic automatic transmission fluid for automotive use.

AMSOIL


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."


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.


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