AMSOIL Signature Series 100% Full Synthetic Long-Life Engine Oils – 0w20, 5w20, 0w30, 5w30, 10w30, 0w40 and 5w50

Best Motor Oil Brand

Setting the standard for protection and performance, AMSOIL Signature Series 100% Full Synthetic Long-Life Engine Oils contain higher TBN than competing motor oils. The higher the Total Base Number (TBN), the more effective the oil is and the longer it will last. AMSOIL Signature Series Engine Oils contain a TBN of 12.6, whereas other passenger car motor oils offer only 7 TBN and are formulated with detergents that quickly lose TBN value.

With TBN loss, oils lose their ability to neutralize acids, prevent high-temperature deposits and inhibit rust. TBN loss is a primary reason oils require changing. AMSOIL Signature Series Engine Oils contain highly effective detergent-alkalinity additives, which is just one of the reasons AMSOIL is the best motor oil brand on the market.

Extended Oil Change Intervals

AMSOIL Signature Series Synthetic Engine Oils extend oil change intervals far beyond those recommended for conventional oils (see Service Life below). Their unique synthetic formulation and long-drain additive system are inherently stable to resist oxidation and neutralize the acids that shorten the service life of other oils. AMSOIL Signature Series Engine Oils are designed to deliver the best possible engine protection, cleanliness and performance over extended oil change intervals. They reduce vehicle maintenance and waste oil.

Designed to Maximize Energy Efficiency and Improve Fuel Economy

AMSOIL Signature Series Synthetic Engine Oils are designed to maximize energy efficiency and improve fuel economy. Unlike conventional oils, their uniform molecular structure helps them flow more freely and reduce friction between metal surfaces. Anti-friction additives are included to further improve energy efficiency.

Note: As stricter fuel economy standards are being set, auto makers are turning to low-viscosity oils (such as 0w20 and 0w30) for their fuel economy performance. Unlike most oil manufacturers, AMSOIL insists on using long-life viscosity index improvers that not only allow their oil to pass required fuel efficiency tests, but to also provide continued fuel economy performance and wear protection throughout the life of the oil. It is, after all, part and parcel of the oil’s formulation.

• AMSOIL Signature Series 0w30 replaces other 0w30, 5w30 and 10w30 motor oils
• AMSOIL Signature Series 0w20 replaces other 0w20 and 5w20 motor oils

Longer Engine Life

AMSOIL Signature Series Synthetic Engine Oils provide outstanding anti-wear protection. They develop a strong fluid film that keeps metal surfaces separated while their robust anti-wear additives further reduce wear in metal-to-metal contact regions for maximum engine life. In the Sequence IIIG test, which is normally run for 100 hours, AMSOIL Signature Series Synthetic Engine Oil delivered outstanding wear protection for the camshaft and lifters, even after doubling the test interval to 200 hours. For details, see the Double-Length Sequence IIIG Engine Test Technical Study  (510.3 kb pdf).

Reduces Oil Consumption and Emissions

Evaporation (volatility) occurs when oil gets hot. Vaporized oils grow thick and heavy, which causes them to circulate poorly, increasing engine wear and reducing fuel efficiency. Oil consumption skyrockets and emissions are increased as oil boils off. AMSOIL Signature Series Synthetic Engine Oils exhibit an extremely low volatility rate, making them the best oil for controlling volatility-related oil consumption and emissions.

Keeps Engines Clean

AMSOIL Signature Series Synthetic Engine Oils are heavily fortified with detergent and dispersant additives to prevent sludge deposits and keep engines clean longer for top performance, efficiency and maximum service life.

Excess piston deposits can lead to pre-ignition and engine knocking, which results in lost power, reduced fuel economy and, in severe cases, engine damage. AMSOIL Signature Series Engine Oils’ premium additives and naturally high resistance to extreme heat help keep pistons clean for maximum engine performance. After a double-length, 200-hour Sequence IIIG engine test, Signature Series demonstrated outstanding cleanliness properties and shattered the requirements of a 100-hour test.

Excels in Hot- and Cold-Weather Extremes

AMSOIL Signature Series Synthetic Engine Oils resist thermal (heat) breakdown better than conventional oils. And unlike conventional oils, they contain no wax, staying fluid in the coldest winter temperatures for easier cold-weather starting, improved oil flow and reduced bearing wear. AMSOIL Signature Series 0w20, 5w20, 0w30, 5w30, 10w30, 0w40 and 5w50 Synthetic Engine Oils remain fluid down to -63, -63, -60, -60, -54, -60 and -53 degrees Fahrenheit, respectively.

Retains Oil Viscosity

AMSOIL Signature Series Synthetic Engine Oils exceed the most demanding worldwide performance standards and dramatically outperform conventional petroleum oils. AMSOIL Signature Series 0w20, 5w20, 0w30, 5w30, 10w30, 0w40 and 5w50 Engine Oils surpass the North American SAE and European ACEA oil specification for high-temperature/high-shear viscosity, which means they won’t shear back to a lower viscosity oil in the high-temperature/high-shear conditions of today’s small, high rpm engines. AMSOIL 0w20 remains a 0w20, AMSOIL 5w20 remains a 5w20, AMSOIL 0w30 remains a 0w30, AMSOIL 5w30 remains a 5w30 and AMSOIL 10w30 remains a 10w30, AMSOIL 0w40 remains a 0w40 and AMSOIL 5w50 remains a 5w50.

Service Life

AMSOIL Signature Series Synthetic Engine Oils are recommended for extended oil drain intervals in unmodified, mechanically sound gasoline-fueled vehicles as follows:

Gasoline Engines:

Normal Service: Up to 25,000 miles, 700 hours of operation or one year, whichever comes first, in personal vehicles

Severe Service*: Up to 15,000 miles, 700 hours of operation or one year, whichever comes first

*Severe Service: Primarily short trips (less than 10 miles [16 km]); turbo/supercharged engines; commercial or fleet vehicles; excessive idling; first-time use of AMSOIL motor oil in a vehicle with more than 100,000 miles; frequent towing, hauling, plowing or driving in dusty conditions.

Oil Filter Service Intervals

Extended oil drain intervals are based on the user following AMSOIL recommended oil filter service intervals:

• If using an AMSOIL Ea Extended-Life Oil Filter, install a new oil filter at time of oil change. AMSOIL Ea Oil Filters are designed for extended oil drain intervals. They stop smaller particles, allow more oil flow and last longer than regular filters.
• If using other brands of oil filters, install a new oil filter at time of oil change then change at the engine manufacturer’s recommended filter change intervals.

Good to Know

• For best results, use AMSOIL Engine and Transmission Flush before installing AMSOIL synthetic motor oil.
• For maximum engine protection, use an AMSOIL Ea Extended Life Oil Filter.
• AMSOIL recommends checking the oil at a minimum of every 3,000 miles to maintain proper fill levels and maximum engine protection.
• Oil Analyzers, Inc., a division of AMSOIL, Inc., provides cost effective, quality oil analysis services.
• Most quick lube service centers will install these products upon request or you can install them yourself.

Applications

AMSOIL Signature Series 100% Full Synthetic 0w20, 5w20, 0w30, 5w30, 10w30, 0w40 and 5w50 Engine Oils are excellent for use in all types of gasoline-fueled vehicles and meet or exceed the current API and ILSAC specifications. They are recommended for all domestic and foreign vehicles requiring any of the following performance specifications:

AMSOIL Signature Series Full Synthetic 0w20 Engine Oil (ASM):

• API SN (Resource Conserving), SM…
• ILSAC GF-5, GF-4…
• ACEA A1/B1
• Chrysler MS-6395;
• Ford WSS-M2C947-A
• GM dexos1™ (supersedes 6094M) Fortified with detergents that exceed dexos1 sulfated ash specifications

AMSOIL Signature Series Full Synthetic 5w20 Engine Oil (ALM):

• API SN (Resource Conserving), SM…
• ILSAC GF-5, GF-4…
• ACEA A1/B1
• Chrysler MS-6395
• Ford WSS-M2C945-A, WSS-M2C930-A
• GM dexos1™ (supersedes 6094M) Fortified with detergents that exceed dexos1 sulfated ash specifications

AMSOIL Signature Series Full Synthetic 0w30 Engine Oil (AZO):

• API SN (Resource Conserving), SM…
• ILSAC GF-5, GF-4…
• ACEA A5/B5, A1/B1
• Chrysler MS-6395
• GM dexos1™ (supersedes LL-A-025, 6094M and 4718M) Fortified with detergents that exceed dexos1 sulfated ash specifications

AMSOIL Signature Series Full Synthetic 5w30 Engine Oil (ASL):

• API SN (Resource Conserving), SM…
• ILSAC GF-5, GF-4…
• ACEA A5/B5, A1/B1
• Chrysler MS-6395
• Ford WSS-M2C946-A, WSS-M2C929-A
• GM dexos1™ (supersedes LL-A-025, 6094M and 4718M) Fortified with detergents that exceed dexos1™ sulfated ash specifications
• Honda HTO-06

AMSOIL Signature Series Full Synthetic 10w30 Engine Oil (ATM):

• API SN (Resource Conserving), SM…
• ILSAC GF-5, GF-4…
• ACEA A5/B5, A1/B1
• Chrysler MS-6395
• Ford WSS-M2C205-A
• GM LL-A-025, 6094M, 4718M

AMSOIL Signature Series Full Synthetic 0w40 Engine Oil (AZF):

• API SN, SM…
• Chrysler MS-12633, MS-10725, MS-10850
• Nissan GT-R

AMSOIL Signature Series Full Synthetic 5w50 Engine Oil (AMR):

• API SN, SM…
• Ford WSS-M2C931-C (Mustang)

Shipping for Online and Catalog Customers

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Return Policy

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