Your Diesel Deserves AMSOIL

We design AMSOIL diesel oils with the same passion and pride you put into your diesel.

Performance Day-In and Day-Out

Protecting high-performance engines is what we do.

Run Longer. Change Less

Count on our Signature Series for extended drain intervals to keep your car running longer

Ride Hard. Run Cool.®

AMSOIL delivers synthetic technology specifically designed to protect your bike and the spirit of the American biker.

Where Precision Drives Performance

AMSOIL Synthetic European Motor Oil is precision-engineered for the unique demands of European vehicles.

Lubricants as Dependable as You

People depend on you to get the job done rigth the first time. You can depend on AMSOIL to help you deliver.

There's No Time for Downtime

AMSOIL synthetic lubricants are designed for maximum protection, performance and reliability in extreme conditions, helping reduce costs and control unexpected repairs and downtime.

Performance Where You Need It

On the track or on the trail, AMSOIL Dirt Bike Oil is designed to deliver confidence, maximizing the performance of both bike and rider.

Up-to 25% off for AMSOIL Preferred Customers

The best customers get the best deals. Become an AMSOIL Preferred Customer and save up to 25% on all your favorite AMSOIL products.

Conquer All the Terrain

Whether you’re tackling a to-do list or heading off road, AMSOIL products deliver the upgraded protection you need to safely and confidently push your machine to the limit.

Give Yourself the Best Shot

AMSOIL products deliver the protection you need to ensure your firearms perform when you need them.

Take Care of Her

She treats you right, so she deserves the best.

We have your make

Find Products for your Ride

AMSOIL makes top-quality synthetic lubricants for your car, truck, motorcycle, boat, four-wheeler, snowmobile, lawnmower and anything else with an engine. AMSOIL lubricants are designed to help your equipment run at peak efficiency and last longer. Join the millions of proud AMSOIL users to experience the difference.

Auto & Light Truck

Motorcycle

ATV

UTV

Snowmobile

Marine Outboard

PWC

Small Engine

Heavy Duty

frequently purchased

Popular Products

AMSOIL SERIES 15W-40 100% SYNTHETIC MAX-DUTY DIESEL OIL

AMSOIL 5W-30 LS 100% SYNTHETIC EUROPEAN MOTOR OIL

AMSOIL SIGNATURE SERIES 0W-16 100% SYNTHETIC MOTOR OIL

AMSOIL 0W-16 100% SYNTHETIC HYBRID MOTOR OIL

AMSOIL 0W-20 100% SYNTHETIC HIGH-MILEAGE MOTOR OIL

AMSOIL 5W-30 100% SYNTHETIC SMALL-ENGINE OIL

Quality Savings

AMSOIL

AMSOIL was created to push what’s possible. For nearly 50 years, we have pursued that goal with a relentless passion and allowed it to inform every product, technology, and service we offer. AMSOIL Preferred customers enjoy savings up to 25% on every order, get free shipping on orders over $100, receive cash back, get exclusive promotions, and more. Sign up today to start saving on your next orders.

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Better Performance. Higher Quality.

Performance

We are driven to earn the loyalty of every customer by engineering innovative lubricant solutions and investing in expertise to deliver the performance they’ve been promised and the satisfaction they deserve.

High Quality Materials

Holding ourselves to higher quality standards is our industry trademark. We select raw materials based on quality and performance, not price. Each chemical is tested to ensure it meets our quality standards before it is accepted into our manufacturing facility. Our manufacturing process uses a strictly controlled computerized process to maintain top-quality finished products.

American Made

AMSOIL INC. embodies the American ideals of entrepreneurship, innovation and hard work. Despite the opportunity to save money by manufacturing in other countries, we’re committed to formulating, blending and packaging AMSOIL synthetic lubricants in the United States.

Lab Tested

Samples of the finished product are subjected to a series of industry-standard tests prior to packaging. Every product AMSOIL manufactures is tested every time it is blended to ensure maximum quality and consistency, ensuring AMSOIL customers receive the same high performance every time they purchase AMSOIL synthetic lubricants

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Business Opportunities

We have a program designed for you depending on how you will use AMSOIL products. We provide a variety of programs designed to boost your bottom line by using or selling our industry-leading products in your own business. Start your own independent AMSOIL Dealership today! Take a brief quiz to determine which AMSOIL program is right for you and your business.  

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Customers Faq

Got questions? We have answers!

AMSOIL synthetic lubricants deliver wear protection, engine cleanliness, and fuel efficiency conventional oils can’t match. They help your vehicles run better and last longer. We understand the need to do our due diligence before making any purchases. We respect and encourage your desire to inspect our products because we know you won’t want to use anything else.

What is the difference between synthetic and conventional oil?

Answer: Motor oil, whether synthetic or petroleum-based, consists of molecular chains of hydrogen and carbon atoms, referred to as hydrocarbons. Petroleum crude oil is a thick, highly flammable dark-brown or greenish liquid with high energy density. Many contaminating elements exist in this complex mixture of hydrocarbons, including sulfur, nitrogen, oxygen and metal components such as nickel or vanadium. Petroleum crude oil is the raw material used for a wide variety of petrochemicals, including solvents, fertilizers, plastics and lubricants.

The oil refining process separates the various types of molecules in the oil by weight, resulting in a concentrated batch suitable for manufacturing products such as gasoline, LPG, kerosene or lubricant base oils. The chemical composition of conventional motor oil can vary substantially depending on the raw crude oil refining process.

While petroleum base oils are refined, synthetic base oils are manufactured and can achieve a higher performance level. Synthetic oil is chemically engineered for a certain molecular composition with a tailored and uniform structure. Such fine-tuned control over the final molecular composition of synthetic oils is the key to their superior performance properties. Designing molecular structures in a planned and orderly fashion results in molecules, and end-products, that are far more stable than their refined petroleum counterparts.

What roles do additives play in motor oil performance?

Answer: Most lubricating oils have other chemicals added to improve the overall performance of the fluid. Chemical additives are used to enhance the beneficial properties of the base oil or to make up for oil deficiencies. For passenger car motor oils, base oil makes up 70 to 80 percent of the final product; the other 20 to 30 percent is comprised of additive chemistry.

Additives help lubricants stand up to extreme operating environments. Even the best base oil would not be able to protect as well against the effects of heat, shearing forces, chemical and water dilution, corrosion and wear particles. In short, additives make good base oils even better. They give good base oils the performance benefits consumers have come to expect, such as multi-grade performance, extended drain intervals and extreme-pressure performance.

Anti-wear Agents chemically react to form a film barrier that prevent metal-to-metal contact and wear.

Antioxidants reduce the tendency for oil to react with oxygen and reduce sludge buildup.

Dispersants help suspend and disperse contaminants in the oil to keep engine surfaces free of sludge and deposits. They fight the build-up of corrosive acids and are most efficient at controlling low-temperature deposits.

Contaminant Particles
Detergents help suspend and disperse contaminants in the oil to keep engine surfaces free of sludge and deposits. They are most efficient at controlling high-temperature deposits.

Extreme-Pressure Additives coat metal surfaces to help prevent close-contact components from seizing under extreme pressure. They are activated by high temperatures and high loads to react with the metal’s surface to form a sacrificial wear layer on components.

Foam Inhibitors reduce the surface tension of air bubbles and causes them to collapse.

Foam bubbles
Friction Modifiers can be used to give oil more ‘slippery’ characteristics. In engine oils, friction modifiers are used to increase the oil’s lubricity for the purpose of reducing friction and improving fuel economy.

Pour Point Depressants give high-viscosity oils good low-temperature properties. Pour point depressant polymers inhibit the formation of crystals to minimize low-temperature viscosity increase.

Rust & Corrosion Inhibitors form a protective barrier over component surfaces to seal out water and contaminants. While most rust and corrosion inhibitors work by forming a physical barrier, some rust inhibitors function by neutralizing acids.

Viscosity Index (VI) Improvers are long-chain polymers that help control the viscosity of multi-grade engine oils. They expand and contract as temperatures vary. High temperatures cause VI improvers to expand and reduce oil thinning; low temperatures cause VI improvers to contract and have little impact on oil viscosity. Viscosity Index Improver

Will synthetic motor oils cause engines to leak oil?

Answer: No. Synthetic oils do not cause engines to leak oil. In fact, AMSOIL synthetic motor oil is fully compatible with modern seal materials and is properly formulated to condition seals, keeping them pliable to prevent leakage.

Can synthetic oil be used in new engines?

Answer: Yes. Synthetic oil is perfectly safe for use in both new and high-mileage engines.