AMSOIL Synthetic Lubricants


AMSOIL Signature Series Max-Duty Synthetic Diesel Oil provides 6X more wear protection than required by a leading industry standard1.

AMSOIL Synthetic Lubricants

AMSOIL specializes in developing synthetic lubricants that offer innovative answers to the greatest challenges vehicles and equipment present. The extraordinary performance of AMSOIL synthetic lubricants in a range of markets – automotive, powersports, industrial, racing and more – has made our influence in the industry unmistakable and our brand highly respected. Our commitment to innovation has resulted in legions of brand-loyal customers.

AMSOIL Dealer in Great Falls | Exclusive Distribution

Dooley’s Diabolical Diesel is am officially licensed dealer of AMSOIL premium synthetic lubricants for the Great Falls Area and Central Montana.

AMSOIL invests heavily in product research and validation to ensure we remain at the industry’s forefront. Our on-site chemical and mechanical test facilities contain the sophisticated instruments needed to develop cutting-edge synthetic technology. AMSOIL synthetic lubricants are validated in long-range studies with taxicabs, delivery fleets, police and emergency vehicles, over-the-road trucks, wind turbines and industrial machinery.

Further testing occurs at race tracks around the world. AMSOIL lubricants have helped racing teams operating off-road trucks, stock cars, high-powered boats, dirt bikes and snowmobiles capture countless checkered flags and championships. We believe that Racing is Research,™ and we use the data our racing efforts generate to tailor AMSOIL formulations for even greater levels of performance and protection

Why are AMSOIL Products Distributed Exclusively Through Independent AMSOIL Dealers?

American Ideals
AMSOIL INC. was founded on the American ideals of independence and entrepreneurship. From a one-person operation based in a small garage, our founder, Al Amatuzio worked tirelessly to build a company devoted to helping our customers maximize the protection and performance of their vehicles.

AMSOIL Dealers embody our spirit of entrepreneurship, and we wouldn’t be here without them. When we introduced the world’s first API-qualified synthetic motor oil in 1972, it languished on store shelves next to its much cheaper conventional-oil counterparts. Consumers hadn’t heard of synthetic oil and didn’t understand its benefits. That all changed with the founding of the Dealer network in 1973. Our Dealers were able to convey the benefits of synthetic lubricants much better than simple product labels, and the company grew exponentially.

Independent Dealers helped build AMSOIL. Like you, many are regular people with a passion for cars, trucks and powersports equipment. They and the retail outlets they serve offer knowledge and service after the sale typically unavailable at big-box retailers. As independents, their success isn’t hindered by a corporate structure; it’s tied directly to how hard they work and how well they serve you.

By distributing AMSOIL products through independent Dealers, we remain free from the demands of big-box retailers. Developing synthetic lubricants that maximize the protection and performance of the vehicles you love requires formulating for higher performance, not lower prices.

Amsoil Motor Oil

Motor Oil

Amsoil Compressor Oil

Compressor Oil

Amsoil Gear Oil

Gear Oil

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Steering, Break and Suspension Fluid

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Engine Lubricants

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Fuel Additives

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Bearing And Chassis Grease

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Antifreeze and Coolant

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Bar and Chain Oil

Amsoil Hydraulic Oil

Hydraulic Oil

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Transmission Fluid

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Amsoil Cleaners and Protectants

Cleaners and Protectants

Differences begin at the molecular level
Although you might know that synthetic oils outperform conventional oils, you might not understand why.

Synthetics don’t contain the impurities and molecular irregularities inherent to conventional oils. Synthetics’ pure, uniform molecular structures impart properties that provide wear protection, extreme temperature performance and fuel efficiency conventional lubricants just can’t touch – all of which helps you save money with vehicles that run better and last longer.

Engine Protection
Only a microscopic film of oil separates metal surfaces in your engine from touching and causing wear. AMSOIL synthetic motor oils form a more durable fluid film than conventional oils due to their resilient base oils. They reduce wear and help you maximize engine life.

The base oils used in conventional oils contain molecules of different sizes and weights as well as unwanted materials, like wax. This typically requires more energy to circulate throughout your engine, which can reduce fuel economy. Conversely, AMSOIL synthetic motor oils are formulated using molecularly uniform synthetic base oils that slip easily over one another and are free of unwanted materials. They help reduce energy lost to friction and maximize fuel economy.

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