SAE 5W-50 Signature Series 100% Synthetic Motor Oil (AMR)
 SAE 5W-50 Signature Series 100% Synthetic Motor Oil (AMR)

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. AMSOIL AMR 5W-50 is a robust synthetic motor oil formulated specifically for high-horsepower engines including Ford Mustang.

• 50% more cleaning power vs. AMSOIL OE Motor Oil
• Ideal for turbos & direct injection
• Guaranteed protection for up to 25,000 miles or 1 year

Package sizes include:

Quart Bottle
Quart Bottles (case of 12)

Product Code: AMR • Brand: AMSOIL




MSDS Data Sheet

Product Details Tech Data Reviews & RatingRelated Videos

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 SP, SN PLUS, SN
• Ford WSS-M2C931-C (Mustang)

Product Description
Protects Your Engine: AMSOIL Signature Series Synthetic Motor Oil provides outstanding anti-wear protection. It develops a strong fluid film that keeps metal surfaces separated while its 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 Motor 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 (G3320).

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.

Protects Against Engine Wear
AMSOIL Signature Series Synthetic Motor Oil develops a strong fluid film that keeps metal surfaces separated while its robust anti-wear additives further reduce wear in metal-to-metal contact regions for maximum engine life. The Sequence IVA Engine Test, which must be passed to meet the industry-standard API SN specification, simulates extended periods of stop-and-go driving.

For 100 hours, the test engine cycles between 50 minutes of idling and 10 minutes of elevated rpm - conditions that encourage engine wear. The camshaft is then measured for wear in 84 locations and an average score is determined. We used Signature Series 0W-20, the lightest viscosity in the line, to further increase the severity of the test. AMSOIL Signature Series Synthetic Motor Oil provided 75 percent more engine protection against horsepower loss and wear* than required by the industry standard, extending the life of vital components like pistons and cams.

Cam Lobes Wear Test - AMSOIL SS reduces cam wear
sequence IVA engine test results
*Based on independent testing of AMSOIL Signature Series 0W-20, in ASTM D6891 as required by the API SN specification.

Protects Pistons from Low-Speed Pre-Ignition (LSPI)
We armed Signature Series with an advanced detergent system that protects against harmful deposits and low-speed pre-ignition (LSPI). Most new engines feature gasoline direct injection (GDI), often combined with a turbocharger to boost power and improve fuel economy. These new technologies, when combined with a poorly formulated motor oil, promote LSPI and threaten engine operation. LSPI is the spontaneous ignition of the fuel/air mixture prior to spark-triggered ignition. It occurs in today's advanced engines and is much more destructive than typical pre-ignition.

Original equipment manufacturers (OEMs) like GM* have addressed the issue by designing tests to determine a motor oil's ability to prevent LSPI. The GM test allows up to five LSPI events to receive a passing score. Signature Series Synthetic Motor Oil provided 100 percent protection against LSPI* - zero occurrences were recorded.

LSPI piston damage when competitors motor oil is used

Protects Turbochargers
Our unique synthetic formulation is inherently stable to resist oxidation and neutralize acids. Signature Series Motor Oil provides outstanding protection against deposits common to high-temperature engine environments. The tremendous heat and stress turbos create can cause some oils to break down and form harmful bearing deposits through a process known as turbo coking. Over time, turbos can suffer reduced performance or fail altogether.

We challenged Signature Series to the GM Turbo Coking Test, which consists of 2000 cycles of extreme heat soaks. An oil must limit the temperature change within the turbocharger to 13 percent or less to pass the test. Signature Series limited the temperature increase to only 3.6 percent, protecting the turbocharger 72 percent better than required* by the GM dexos1® Gen 2 specification.

amsoil turbo bearing shaft protection

Extends Drains: Protection Guaranteed
AMSOIL Signature Series 25,000 miles drain interval technologyAMSOIL Signature Series Synthetic Motor Oil provides reserve protection, allowing you to go longer between oil changes if you choose up to 25,000 miles, 700 hours of operation or one year, whichever comes first*. Our unique synthetic formulation and long-drain additive system are inherently stable to resist oxidation and neutralize acids over longer periods. Signature Series is designed to deliver outstanding engine protection, cleanliness and performance over extended drain intervals - guaranteed. It provides peace of mind so you can fit oil changes into your schedule.

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.

Trusted by Professional Engine Builders

Engine Masters ChallengeDedicated engine builders and mechanics put in long hours honing their craft. These architects of powerful, high-performance engines turn to Signature Series to protect their passion.

"When we use AMSOIL, I don't worry about a film breakdown or an oil breakdown - and the oil pressure is always consistent. We've tested oils back-to-back on the dyno in our shop and we're always able to make more power with AMSOIL."

-Brett Bowers, Engine Masters Competitor and Professional Engine Builder

Maximum Cleaning Power to Battle Sludge

AMSOIL Signature Series offers Maximum Cleaning Power to Battle SludgeAMSOIL Signature Series Synthetic Motor Oil has 50 percent more detergents* to help keep oil passages clean and promote oil circulation.

Engine failures due to sludge are often caused by a plugged oil pick-up tube screen - the motor is effectively starved of oil. The Sequence VG Engine Test measures an oil's ability to prevent sludge. During the test, a Ford 4.6L engine is subjected to sludge-inducing conditions for 216 hours. The industry standard allows for 10 percent blockage before the motor oil fails the test. Signature Series produced a screen virtually free from sludge (see image). Its detergent and dispersant additives are so effective, Signature Series provides 90 percent better protection against sludge.

• *Based on independent testing of AMSOIL Signature Series 5w-30 motor oil, in the LSPI engine test as required for the GM dexos 1® Gen 2 specification.
• *Based on independent testing of AMSOIL Signature Series 5W-30 in the GM turbo coking test.
• *vs. AMSOIL OE Motor Oil
• *Based on independent testing of AMSOIL Signature Series 5W-30 in the ASTM D6593 engine test for oil screen plugging as required by the API SN specification.
* All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use. All products advertised here are developed by AMSOIL for use in the applications shown.

Preserves Horsepower
The extreme durability of Signature Series Motor Oil ensures your engine runs stronger, for longer. We installed Signature Series 5W-30 Synthetic Motor Oil in a Ford* F-150 with a new 3.5L Ecoboost engine to test its ability to protect turbocharged direct-injection (TDGI) engines from torque and horsepower loss during extended drain intervals up to 25,000 miles. Power sweeps were done at the beginning and end of the test to evaluate horsepower and torque retention. As the graph shows, Signature Series helped maintain engine performance throughout the 100,000 mile test.

horsepower degradation test results

Limits Oil Consumption
Signature Series has a uniform molecular structure that limits evaporation and keeps it where it's needed most - protecting your engine. Volatility (burn-off) occurs when oil gets hot, causing lighter molecules to burn off or evaporate. This leads to oil thickening, additive imbalance, higher emissions and oil consumption. The NOACK Volatility test is the industry standard for evaluating motor oil high temperature evaporation. It measures the percentage of burn-off after a motor oil is placed under constant airflow at 482°F for 1 hour. A lower number indicates a better resistance to evaporation. Signature Series falls far below the API limit for volatility, reducing the need for frequent oil top-offs and limiting vehicle emissions.

noack volatility test results

Easier Cold-Starts
Signature Series Synthetic Motor Oil does not contain paraffins (wax) and stays fluid in temperatures of -58°F and lower. Extreme cold causes other motor oils to thicken, starving vital moving parts of lubrication, accelerating wear and even preventing vehicles from starting. Signature Series provides 66 percent better cold-temperature performance for easier starting, better fuel economy, improved oil flow (as seen below) and reduced wear.

pour point test results

Maintains Protective Viscosity
We formulated Signature Series with superior thermal durability that resists breakdown better than conventional and synthetic motor oils. The Sequence IIIH Test uses the Chrysler 3.6L Pentastar engine to evaluate a motor oil's ability to resist the damaging effects of heat. The test is conducted with oil temperatures of 304°F, 100°F hotter than normal operation, to accelerate oil thickening and deposits. Despite the extreme conditions, Signature Series kept pistons clean and held thickening to only 6 percent, a minimal amount compared to the proposed specification limit of 150 percent*. This stay-in-grade performance helps maintain maximum power and fuel economy while also ensuring advanced technologies like variable valve timing (VVT) operate as designed throughout the entire drain interval.

sequence III-H test results

• *Based on proposed ILSAC GF-5 Plus specification.
*All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use. All products advertised here are developed by AMSOIL for use in the applications shown.

SERVICE LIFE
Normal Service: Up to 25,000 miles, 700 hours of operation or one year, whichever comes first, in personal vehicles not operat-ing under severe service.

Severe Service: Up to 15,000 miles, 700 hours of operation or one year, whichever comes first. Severe service conditions include commercial or fleet vehicles; excessive idling; or frequenttowing, hauling, plowing or driving in dusty conditions.
• Modified engines (non-stock), racing vehicles and vehicles using alternative fuels (E85, CNG, propane, etc.) are excluded from extended drain interval recommendations.
• Change at the vehicle manufacturer’s recommended drain interval outside U.S. and Canada.
• AMSOIL Ea® Full-Flow Oil Filters are designed for extended drain intervals. Do not exceed 12,000 miles or one year with other brand filters unless longer intervals are recommended by the vehicle manufacturer. Always change filter when changing oil.
• Check oil regularly to maintain proper fill levels.

AMSOIL Ea Full-Flow Oil Filters stop smaller particles, flow more oil and last longer than regular filters. For best performance, use AMSOIL Ea Full-Flow Oil Filters.

COMPATIBILITY

AMSOIL Signature Series Synthetic Motor Oil is compatiblewith other conventional and synthetic motor oils. Mixing other oils with AMSOIL motor oils, however, will shorten the oil’s life expectancy and reduce its 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.

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 AMR.

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





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Motor Oil
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0W-20 LS European Motor Oil (AFE)0W-20 LS-VW European Motor Oil (EZT)0W-20 Synthetic Diesel Oil (DP020)0W-30 MS European Motor Oil (EOT)0W40 Signature Series CK-4 Diesel Oil (DZF)0W-40 FS European Motor Oil (EFO)5W-30 LS European Motor Oil (AEL)5W30 Signature Series CK-4 Diesel Oil (DHD)5W-30 Synthetic Diesel Oil (DP530)5W-40 MS European Motor Oil (AFL)5W40 Signature Series CK-4 Diesel Oil (DEO)5W40 Heavy-Duty CK-4 Diesel Oil (ADO)5W-40 FS European Motor Oil (EFM)10W30 Heavy-Duty CK-4 Diesel Oil (ADN)10W30 Signature Series Diesel Oil (DTT)10W30 Commercial Grade Diesel Oil (SBDT)10W-40 Premium Protection Motor Oil (AMO)10W-60 FS European Motor Oil (ETS)15W-40 Heavy-Duty Diesel & Marine (AME)15W40 Heavy-Duty CK-4 Diesel Oil (ADP)15W40 Signature Series CK-4 Diesel Oil (DME)15W40 Commercial Grade Diesel Oil (SBDF)20W-50 Premium Protection Motor Oil (ARO)20W-50 DOMINATOR Competition Diesel Oil (DCO)
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Marine Motor Oil
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SAE 60 Dominator® Synthetic Racing Oil (RD60)Briggs & Stratton Synthetic 4T Racing Oil (GBS2960)Dominator® Synthetic 2-Cycle Racing Oil (TDR)SAE 30 Break-In Oil (BRK)Engine Assembly Lube (EAL)5W-20 Dominator® Synthetic Racing Oil (RD20)10W-30 Dominator® Synthetic Racing Oil (RD30)10W-40 Dominator® Synthetic Racing Oil (RD40)15W-50 Dominator® Synthetic Racing Oil (RD50)
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SAE 30 Break-In Oil (BRK)Engine Assembly Lube (EAL)10W-30 Z-ROD Synthetic Motor Oil (ZRT)10W-40 Premium Protection Motor Oil (AMO)10W-40 Z-ROD Synthetic Motor Oil (ZRD)20W-50 Premium Protection Motor Oil (ARO)20W-50 Z-ROD Synthetic Motor Oil (ZRF)
European Motor Oils
0W-20 LS European Motor Oil (AFE)0W-20 LS-VW European Motor Oil (EZT)0W-30 MS European Motor Oil (EOT)0W-40 FS European Motor Oil (EFO)5W-30 LS European Motor Oil (AEL)5W-40 MS European Motor Oil (AFL)5W-40 FS European Motor Oil (EFM)10W-60 FS European Motor Oil (ETS)
High-Mileage Motor Oil
0W-20 100% Synthetic High-Mileage Oil (HM020)5W-20 100% Synthetic High-Mileage Oil (HM520)5W-30 100% Synthetic High-Mileage Oil (HM530)10W-30 100% Synthetic High-Mileage Oil (HM1030)
Hybrid Motor Oil
0W-16 100% Synthetic Hybrid Motor Oil (HE016)0W-20 100% Synthetic Hybrid Motor Oil (HE020)
4-Stroke & Small Engine Oils
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Natural Gas Engine Oil
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ATV & UTV Drive Train Fluids
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Motorcycle Transmission Fluids
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Gear LubeHigh Performance Gear Lube
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Semi Truck Gear Lube
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Racing & Off Road Gear Lube
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Marine Gear Lube 75W/80W-90 (AGM)Gear Lube AdditiveLimited Slip Differential (LSD) Additive Powershift Transmission FluidPowershift Transmission Fluids
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ATF for Racing, Ford Type F & Allison C-4Super Shift Racing Transmission Fluid
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Engine Flush & Degreaser
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Bar & Chain Oil
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Suspension & Fork Oil
Suspension Fluid #10 Medium (STM)Suspension Fluid #5 Light (STL)
Power Steering FluidDOT Brake Fluid
DOMINATOR DOT 4 Brake Fluid (BFR)DOT 3 and 4 Synthetic Brake Fluid (BFLV)
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Industrial Lubricants
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Fuel Additive
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