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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: 283 vote(s) and 279 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 Pdizzle: space

Excellent Product

I have been using this product since I bought my low milagr 2004 Mustang cobra back in 2013. I have trusted this product to protect my factory supercharged motor and it has done a great job. Happy with all my amsoil products. Loved there oil in my ATV's when I was younger and now I use there stuff in everything.

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 Moparsean: space

I have used this oil for years for several vehicles

I run this oil the full year or 15,000 miles as i fall under severe service useage guidelines. It has always kept the inside of engine clean and i rarely add any oil,it performs well,oil analysis comes back great. Both vehicles i use it in have high miles and i know its keeping them running well. Highly recommended. Amsoil is the best oil in my opinion. I even use amsoil in my lawnmowers. Synthetics are not all equal. This is the best out there. I wrench for a living and have seen the effects of using sub par 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 Q: space

Just as described

I've been using this in all my vehicles since 2010, I'll never use anything else again. I do yearly changes and even after being in the motor for that amount of time it still has a bit of color.

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 LGC driver: space

Exclusively use AMSOIL all vehicles

Have used AMSOIL exclusively for 15 years in my vehicles. Have never had an oil related issue.
This oil is especially good in my F150 eco boost engine. Smooth, quiet, economical performance.
Best of the best!!

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 Vince: space

Long term use & I keep coming back

My car has 140k miles and I've been changing my ea amsoil filter every 10k miles (rated for 15k miles) and my oil in my vehicle every 20k miles (rated for 25k miles) without fail. Excellent results and cheaper in the long run when compared to other conventional products.

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 Todd: space

I'll buy more next year.

Good value for 12 month protection.

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 Ironrider1550: space

Another Great Oil

I use this in my chevy truck. I love the extended drain as it helps save me money and time. The oil still feels great when drained.

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 HJH: space

Cheaper than an engine repair.....

I have used this product in my 2 vehicles since their first oil change. My 2007 Tahoe has 191,000 miles on it and I expect it will perform for many years to come. Although the oil and filter are rated for 25,000 miles or once a year, I still change oil and filter every 6 months; very reasonsonable amount to spend for a bit of extra insurance. I assume my engine is finally broken in since it regularly achieves 20 mpg on the highway.

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 mm: space

great oil

keeps my engine running great

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 Tu D Truong: space

I should use it for life my car

I really like so much AMSOIL suythetic oil products

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