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SAE 5W-30 Signature Series 100% Synthetic Motor Oil (ASL)

 SAE 5W-30 Signature Series 100% Synthetic Motor Oil (ASL)
Product Code: ASL • Brand: AMSOIL

The Top Tier of AMSOIL Synthetic Motor Oil

AMSOIL Signature Series Synthetic Motor Oil delivers extraordinary lubrication in all types of automotive gasoline engines. By combining industry-premier synthetic technology with AMSOIL premium additives, Signature Series Synthetic Motor Oil exceeds the higher performance demands of modern engines.

Package sizes include:

Quart Bottle
Gallon Bottle
30-Gallon Drum
55-Gallon Drum

See Pricing or Place an Order
MSDS Data Sheet French Data Sheet

Product Details

Product Applications

AMSOIL Signature Series Synthetic Motor Oil is excellent for use in all types of gasoline-fueled vehicles. It is recommended for all domestic and foreign vehicles requiring any of the listed performance specifications:

Product Application Specs

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

Product Description

AMSOIL Signature Series Synthetic Motor Oil delivers extraordinary lubrication in all types of automotive gasoline engines. By combining industry-premier synthetic technology with AMSOIL premium additives, Signature Series Synthetic Motor Oil exceeds the higher performance demands of modern engines. It withstands the stress of higher horsepower, higher heat and complicated emissions control systems. Signature Series Synthetic Motor Oil is engineered to outperform competitive conventional and synthetic motor oils. It delivers long-lasting performance and protection.

AMSOIL, the leader in automotive synthetic lubrication, produced the world's first API-qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL, the First in Synthetics®, to do the best job protecting your engine.

Extends Drain Intervals

AMSOIL Signature Series Synthetic Motor Oil can extend drain intervals far beyond those recommended for conventional oils. Its unique synthetic formulation and long-drain additive system are inherently stable to resist oxidation and neutralize acids over longer periods. Signature Series Synthetic Motor Oil is designed to deliver the best possible engine protection, cleanliness and performance over extended drain intervals. It reduces vehicle maintenance and waste oil disposal costs.

Oil Filter:

Any brand of oil filter may be used with Signature Series Synthetic Motor Oil. For maximum convenience, however, use an AMSOIL Ea® Oil Filter. Made of fully synthetic media with greater filtering efficiency and dirt-holding capacity than conventional filters, Ea Oil Filters are recommended for 25,000 miles/12 months or 15,000 miles/12 months, depending on application, which coincides with Signature Series' once-a-year drain interval. While Signature Series' 12-month service life remains intact if a non-Ea Oil Filter is used, the filter must be changed according to its manufacturer's recommendations.

Maximizes Fuel Economy

AMSOIL Signature Series Synthetic Motor Oil is designed to maximize energy efficiency for improved fuel economy. Unlike conventional oils, its uniform molecular structure helps it flow more freely and reduce friction between metal surfaces. Anti-friction additives are included to further improve energy efficiency.

Reduces Engine Wear

Signature Series Synthetic Motor Oil provides outstanding anti-wear protection. It has excellent viscosity film strength to separate metal surfaces and robust anti-wear additives to further reduce wear in metal-to-metal contact regions for improved engine life.

Reduces Oil Consumption and Emissions

Volatility (burn-off) occurs when oil gets hot, causing high oil consumption and emissions. AMSOIL Signature Series Synthetic Motor Oil exhibits an extremely low volatility rate; it controls volatility-related oil consumption and emissions.

Excels in Extreme Temperatures

AMSOIL Signature Series Synthetic Motor Oil resists thermal (heat) breakdown better than conventional oils. It is heavily fortified with detergent and dispersant additives to help prevent sludge deposits and keep engines clean. And unlike conventional oils, Signature Series Synthetic Motor Oil contains no wax, staying fluid in the coldest winter temperatures for easier starting, improved oil flow and reduced bearing wear.

Compatibility

AMSOIL Signature Series Synthetic Motor Oil is compatible with other conventional and synthetic motor oils. Mixing AMSOIL motor oils with other oils, however, will shorten the oil's life expectancy and reduce the performance benefits. AMSOIL does not support extended drain intervals where oils have been mixed. Aftermarket oil additives are not recommended for use with AMSOIL synthetic motor oils.

SERVICE LIFE

AMSOIL Signature Series Synthetic Motor Oil is recommended for extended drain intervals in unmodified(1), mechanically sound(2) gasoline-fueled vehicles as follows:

• Normal Service(3) - Up to 25,000 miles or one year, whichever comes first.
• Severe Service(4) - Up to 15,000 miles or one year, whichever comes first.
• In all non-gasoline-fueled vehicle applications, extend the oil change interval according to oil analysis or follow the OEM* drain interval.

*OEM - Original Equipment Manufacturer

(1) Engines operating under modified conditions (non-stock) are excluded from extended drain recommendations. Examples include the use of performance computer chips; non-OEM approved exhaust, fuel or air induction systems; and the use of fuels other than those recommended for normal operation by the manufacturer.

(2) Mechanically sound engines are in good working condition and do not, for example, leak or consume excessive amounts of oil, are not worn out, do not overheat, do not leak antifreeze and have properly working emissions control systems. AMSOIL recommends repairing malfunctioning engines prior to the installation of AMSOIL synthetic oils.

(3) Personal vehicles frequently traveling greater than 10 miles (16 km) at a time and not operating under severe service.

(4) Turbo/supercharged engines, commercial or fleet vehicles, excessive idling, vehicles with more than 100,000 miles without prior continuous use of AMSOIL motor oil, daily short-trip driving less than 10 miles (16 km), frequent towing, plowing, hauling or dusty condition driving.

AMSOIL Ea® Full-Flow Oil Filters are designed for extended change intervals. They stop smaller particles, flow more oil and last longer than regular filters. For best performance, use AMSOIL Ea Full-Flow Oil Filters.

HEALTH & SAFETY

This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS).

Click here to view the MSDS Data Sheet for AMSOIL ASL.

Keep out of the reach of children. Don't pollute. Return used oil to collection centers.

Close Product Detail
Technical Data
TYPICAL TECHNICAL PROPERTIES
Signature Series 100% Synthetic 5W-30 Motor Oil (ASL)
Kinematic Viscosity @ 100°C, cSt (ASTM D-445)10.5
Kinematic Viscosity @ 40°C, cSt (ASTM D-445)60.1
Viscosity Index (ASTM D-2270)166
CCS Viscosity, cP @ (°C) (ASTM D-5293)4426 (-30)
Flash Point °C (°F) (ASTM D-92)226 (439)
Fire Point °C (°F) (ASTM D-92)248 (478)
Pour Point °C (°F) (ASTM D-97)-51 (-60)
NOACK Volatility, % weight loss (g/100g) (ASTM D-5800)6.9
High Temperature/High Shear Viscosity
@ 150°C, 1.0 X 106 s.-1), cP (ASTM D-5481)
3.2
Four-Ball Wear Test @ 40 kgf, 75°C,
1200 rpm, 1 hr, scar diameter, mm (ASTM D-4172)
0.35
Total Base Number (ASTM D-2896)12.6
Close Technical Data

 SAE 5W-30 Signature Series 100% Synthetic Motor Oil (ASL)

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Product Name: SAE 5W-30 Signature Series 100% Synthetic Motor Oil (ASL)
Current Rating: 4.96 out of 5 stars
Votes & Reviews: 346 vote(s) and 342 user reviews.


A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by handyman: space

beening buying since 1980

I have used amsoil products in all the vechile i purschase over the years including my motor home some of the vechicles were diesel some were gas. i used it in them all.

Item Reviewed: SAE 5W-30 Signature Series 100% Synthetic Motor Oil (ASL)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Believer: space

It really does matter

I began using Amsoil back in the 80's after reading their claims vs conventional oil.

After some years, I transitioned to one nationaly recognised synthetic I could buy at a big box store...it was about the same cost, a little more convenient, and I reasoned, probably good enough.

In the process of time, I bought a 94 Miata. After some work, it ran well, nearly 30 mpg, but the lifters were noisey. To quite the lifters, I took each one apart, cleaned them, and reassembled all 24 of them with 10-40 high mileage oil of that one brand of synthetic.

Much to my surprise, the lifters were now much worse.

I immediately changed the oil to that same one brand, but 0-30. This made the lifters quieter, like they were before I cleaned them.

On a lark, I decided to try Amsoil 5-30 in the Miata. I could not believe the difference! I had done all that work, but all I needed to do was pour in a higher quality oil. The idle was now smooth and quiet; so much so that when I sold the car to another Miata enthusiat (advertising the smooth and quite engine at 185,000 miles), all they did before paying my asking price was open the hood to see the engine idling.

Amsoil. I've seen it make a diffdrence.

Item Reviewed: SAE 5W-30 Signature Series 100% Synthetic Motor Oil (ASL)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jason C: space

Amsoil Only!

I switched to amsoil in 2007 and have never looked back. It's the only Brand I trust in my vehicles.

Item Reviewed: SAE 5W-30 Signature Series 100% Synthetic Motor Oil (ASL)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by JRobin: space

This is the only Oil I have used for many years.

I use Amsoil ONLY in my truck, car, Harley, and outboard engines!

Item Reviewed: SAE 5W-30 Signature Series 100% Synthetic Motor Oil (ASL)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by T BEAR: space

ONE YEAR OIL

MY FAMILY ALSO USES IT HOW ABOUT THAT

Item Reviewed: SAE 5W-30 Signature Series 100% Synthetic Motor Oil (ASL)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Woodster: space

I buy this product every year.

I use the oil filter and the 25,000 mile oil for the mileage listed or once a year, whichever comes first.
The once a year always comes first for me.
Thanks for such a good oil.

Item Reviewed: SAE 5W-30 Signature Series 100% Synthetic Motor Oil (ASL)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Doctor D2: space

Great oil!

Bought the oil. Best purchase decision ever. Engine is purring like a kitten, with the best mph ever.

Item Reviewed: SAE 5W-30 Signature Series 100% Synthetic Motor Oil (ASL)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Chopper: space

I'm relying on the reputation!

I only came to know and use Amsoil from the previous user of my Nissan Titan. He stated he had used Amsoil in it after he bought it. Not wanting to change to a different oil even though I had always use Castrol or Mobile 1, I decided to check on this Amsoil oil he was using. I have to tell you I truly believe this has to be a better oil then what had been using in my last 45 years of driving! With all the testing that Amsoil does on their oil and what it goes in really impresses me at they know oil and they really truly know synthetic oil! I am proud to display my Amsoil sticker on my back windshield of my truck knowing that I am part of a elite group of guys that are wanting the best oil for their engines!

Item Reviewed: SAE 5W-30 Signature Series 100% Synthetic Motor Oil (ASL)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Daniel: space

Proven benefits

I've been using this AMSOIL for several years now. I saw immediate improvements in my daily commuter just from switching to their oil & filter

Item Reviewed: SAE 5W-30 Signature Series 100% Synthetic Motor Oil (ASL)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tim: space

Only Oil I run

I run the full line of Amsoil synthetics in all my vehicles, my F150 Ecoboost is my primary work vehicle, I drive 7 to 8 thousand miles a month, I am a regional manager with a multi state territory, Amsoil makes excellent products Ive never had any issues

Item Reviewed: SAE 5W-30 Signature Series 100% Synthetic Motor Oil (ASL)
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