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AMSOIL – Premium Synthetic Motor Oils.

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AMSOIL – The Industry’s Leading Manufacturer Of Synthetic Oils, Oil Lubricants, Heavy Duty Diesel Equipment, And Car Performance Products

About AMSOIL

When it comes to the performance of your cars, trucks, SUVs, motorcycles, boats, two-cycle vehicles, equipment, and machinery, nothing compares to AMSOIL Premium Synthetic Motor Oils and oil Lubricants. When you use AMSOIL Synthetic Oils and oil Lubricants, you can rest assured that your investment is safe, that your equipment will last longer, that your running and fuel costs will be lower, and that you are doing your part to protect the environment.

Automobile, heavy diesel equipment, racing, fleet, maritime, farm and agricultural, two-cycle, and industrial applications are just some of the areas where AMSOIL’s synthetic oils and lubricants shine. AMSOIL has created high-tech fluids and solutions to complement its lubricants, extending equipment life and maximizing performance.

To improve engine performance, reduce maintenance costs, and extend the life of vehicles and equipment, AMSOIL Products have been the go-to choice of drivers, sports fans, racers, boaters, farmers, ranchers, and fleet and industrial managers since 1972.

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Why Choose US?

Why Synthetic Oil?

Learn about the differences between conventional and synthetic lubricants, review performance test results or learn more about AMSOIL in general.

Shop Online

Browse the full line of AMSOIL synthetic lubricants, filters, fuel additives and more. Place your order online and have it shipped direct to your house.

Save Money

Order $100 or more in AMSOIL products and receive free shipping, OR become a Preferred Customer and save up to 25 percent on every order.

Benefits of AMSOIL

The Best Synthetic Oil in 2022 can be found here at GetMotorOil.com, so we appreciate you taking the time to visit us.
To learn more about why AMSOIL is the best, see the video “Who Wins Championship?” above, which features the results of an independent research proving this claim.
The film was created by an impartial third party and shows which synthetic performed the best.

AMSOIL Synthetic Lubricants Boast…

AMSOIL “Signature Series” Synthetic Motors Oils dramatically outperform conventional Petroleum motor oils.

Why AMSOIL Synthetic Motor Oils?

They reduce friction, heat and wear for maximum power, performance and fuel efficiency.

Products

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Equipment

Customers Love AMSOIL

One Year Oil Change, proven!

I use Amsoil Signature Series 5W-30 Synthetic motor oil and Amsoil filters in my Generac 27KW generator. If the generator doesn’t run in a power outage, it becomes an expensive lawn ornament! With Amsoil, I am confident the engine and generator will perform as expected. and under any conditions.
Phillip
from Near Baltimore

Will use it for all my vehicles!

With oil analysis, change diesel oil as little as possible. If your goal is to change diesel oil as infrequently as possible, used oil analysis is unbeatable.
Amy Johnson
from New York

Hands down the best oil!

Great oil, works as advertised, and I always appreciate how easy it is to order from AMSOIL. Used this in my old car for years and never had an issue. Just swapped to another vehicle and plan on using it for the life of it which will hopefully be longer since I’m using this oil!
Eric
from Louisiana

Free Catalog

Browse the full line of premium AMSOIL products in the latest AMSOIL factory direct catalog.

Frequently Asked Questions

AMSOIL products have been available since 1972, when AMSOIL 10W-40 Synthetic Motor Oil became the first synthetic motor oil to meet American Petroleum Institute (API) service requirements. Today, AMSOIL manufactures synthetic lubricants for virtually all automotive, powersports, commercial and industrial applications.

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.

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

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.

There are no special requirements for changing to AMSOIL synthetic motor oil. However, in older vehicles with high mileage, it may be advisable to use AMSOIL Engine and Transmission Flush first. This will ensure the engine is clean and free of accumulated contaminants that may affect the service life of AMSOIL synthetic motor oil. Installation of an AMSOIL Oil Filter at every oil change is also recommended.

AMSOIL OE Synthetic Motor Oil is recommended for vehicle manufacturer-recommended oil change intervals; AMSOIL XL Synthetic Motor Oil is recommended for extended drain intervals of 12,000 miles or a year (whichever comes first) and AMSOIL Signature Series Synthetic Motor Oil is recommended for extended drain intervals of 25,000 miles or one year (whichever comes first). AMSOIL Signature Series Synthetic Motor Oil is formulated with better base oils and more robust additives, allowing longer extended drains than AMSOIL OE or XL Synthetic Motor Oils.

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