PROTECTION You Demand. PERFORMANCE You Deserve. AMSOIL®
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Learn More About AMSOIL
Smart Synthetics is your trusted source for AMSOIL products, delivering superior lubrication solutions for cars, trucks, powersports equipment, diesels, motorcycles, and more. Experience the benefits of AMSOIL and save 25% as a preferred customer. Proudly serving the US & Canada since 1972. Find updated AMSOIL promo codes here!
Understanding Oil Viscosity
Viscosity is the measure of a fluid’s resistance to flow. The physical properties of lubricants are measured by characteristics like viscosity, shear stability, high- and low-temperature performance, water resistance and volatility. Lubrication science seeks to optimize a lubricant’s performance by managing these properties using different base oils and additives. A lubricant’s viscosity and how it…
Buy AMSOIL Products
Find the right AMSOIL products for you based on your vehicle, engine, fuel type, and application.
AMSOIL Motor Oils
Many AMSOIL Motor Oils offer guaranteed protection between 20,000 and 25,000 miles. Select between premium synthetic lubricants including diesel motor oils, gas engine oils, DOMINATOR® racing oils, high-zinc oils, 2-stroke oils, 4-stroke oils, oil change kits, and many more.
AMSOIL Transmission Fluids
AMSOIL Transmission Fluids cover a wide range of vehicle and transmission types. Select between AMSOIL ATF (Automatic Transmission Fluid), manual transmission fluid, powersports transmission/differential fluid, and hydrostatic transmission fluid.
AMSOIL Gear Lubes
AMSOIL Gear Oils protect gearboxes, chaincases, and lower units in a wide variety of applications. Select between AMSOIL SEVERE GEAR® Oil, Long Life Gear Oil, Extreme Pressure (EP) Gear Oil, Chaincase Oil, and Lower Unit Gear Lube.
AMSOIL Antifreeze & Coolants
AMSOIL Antifreeze/Coolants are engineered to deliver maximum protection in a wide variety of applications. Select between Passenger Car & Light Truck Antifreeze, Powersports Antifreeze, and a selection of additive & supplemental products like DOMINATOR Coolant Boost and AMSOIL Antifreeze Test Strips.
Find the Right AMSOIL Product for Your Application
Speedy Shipping - FREE When You Spend $100
When you order from premium brand like AMSOIL - The First in Synthetics - experience speedy delivery from 13 warehouses across North America. Learn more about how you can get free shipping on orders over $100 like thousands of other customers.
AMSOIL Filters
AMSOIL Filters provide extended service intervals while helping reduce engine wear. Select between car, truck & heavy-duty oil filters, bypass oil filters, bypass filter systems & mounts, powersports oil filters, oil change kits, and many more.
AMSOIL Fuel Additives
AMSOIL Fuel Additives are formulated to clean stubborn, power robbing deposits from injectors, valves and combustion chambers. Shop AMSOIL Fuel Additives for diesel and gasoline engines. Popular products include Diesel Cold Flow, AMSOIL Quickshot, Motorcycle Octane Booster, and many more.
AMSOIL Greases
AMSOIL Greases protect chassis & bearings by reducing friction and wear with their premium-quality synthetic base oils. Their most popular products include multi-purpose grease, AMSOIL Spray Grease, engine assembly lube, DOMINATOR®️ Synthetic Racing Grease, water-resistant grease, and many more.
AMSOIL Cleaners & Protectants
AMSOIL Cleaners & Protectants are versatile products engineered to clean and protect various vehicle components. Repel mud, dirt, and snow with AMSOIL Mudslinger. Also checkout Metal Protector, Chain Lube, Air Tool Oil, and many other products.
AMSOIL Comparison Articles
See how AMSOIL stacks up against every major competitor. We've done technical analyses comparing AMSOIL products with Valvoline, Shell, Pennzoil, Klotz, Motul, Red Line, Polaris, Harley oil, Liqui Moly, Royal Purple, Mobil 1, Castrol, and Lucas Oil. We've also broken down AMSOIL products with one another to help you find best product lines, European motor oils, and 2-stroke oils for your application.
Shop by Vehicle
View the appropriate AMSOIL products for your specific vehicle type, make, and model.
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AMSOIL FAQs
Have a question about AMSOIL, products, becoming an AMSOIL Dealer, or any other topic? Visit our contact page or refer to the questions below.
How long does AMSOIL take to ship?
With 13 distribution centers across the US & Canada, more than 99% of orders placed by 5 p.m. Central time between Monday and Friday are processed and shipped within 24 hours and will arrive within 3 days.
Do AMSOIL Dealers make money?
Yes, AMSOIL Dealers make money through commissions of AMSOIL products sold. The amount of money is based on their total monthly team sales and according to a Profit Tier Schedule. Dealers can also get assigned online or catalog customers directly from AMSOIL.
How much does it cost to become an AMSOIL preferred customer?
You can start your own AMSOIL Preferred Customer membership today for $10. This introductory price gets you a membership for 6 months, and to renew you'll pay $20 for a full year. Sign up today and save up to 25% on all AMSOIL products!
What is AMSOIL made from?
AMSOIL is made from the highest quality Group III, IV, & V base oils plus proprietary additives like viscosity modifiers, detergents, anti-wear additives, dispersants, and oxidation inhibitors.
Is AMSOIL the best oil?
AMSOIL is one of the best oils on the market because their products do precisely what we say they will do and they always outperform competing oil products in independent lab testing. Although you'll likely pay a bit more for their premium oils, you'll also save time and money in the long run by using the best.
Does AMSOIL offer wholesale pricing?
Yes, AMSOIL offers wholesale pricing to Preferred Customers and Authorized Dealers.
Is AMSOIL high quality?
AMSOIL offers the highest-quality synthetic oil products on the market, and their quality is backed by rigorous industry-standard testing. AMSOIL designs and engineers products to performance specifications, not down to a price as many other companies do.
Where can you buy AMSOIL?
AMSOIL products are sold online and by distributors and retailers throughout the US & Canada. Using their store locator, you can find AMSOIL at many local auto parts stores, quick lubes, auto service centers, hardware stores, and powersports dealers.
Why is AMSOIL not sold in big box stores?
AMSOIL is not sold in most big box stores because AMSOIL wants to maintain the legacy that founder Al Amatuzio introduced, relying on a national network of AMSOIL Dealers to educate customers on why synthetic oil is better than conventional oil. From AMSOIL: We think it’s important that AMSOIL products are available primarily at businesses that offer specialized products and services. As such, we don’t sell directly to national chains because they can gain a competitive advantage that makes it less desirable for local or regional businesses that offer repair, installation or other value-added services.