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Comparative Motor Oil Testing - 2005

AMSOIL

Vs

Castrol GTX, Chevron Supreme, Havoline, Formula Shell, Pennzoil, Motorcraft, Trop Artic, Pennzoil Platinum, Quaker State Advanced Full Synthetic & Mobil 1 Extended Performance

Note: All Tests are Performed by Independent ASTM Lab

ASTM Test Area Image - File Size: 43.1 KB. High Temperature/High Shear (ASTM D-4683), NOACK Volatility (ASTM D-5800), Pour Point (ASTM D-97), Total Base Number (ASTM D-2896), Cold Cranking Simulator (ASTM D-5293), Castrol GTX Four-Ball Wear (ASTM D-4172)

AMSOIL Synthetic 10W-30 Motor Oil (ATM) and 10 competing conventional, synthetic and synthetic blend 10W-30 motor oils were subjected to a series of motor oil tests. The competing oils included petroleum-based Castrol GTX, Chevron Supreme, Havoline, Formula Shell and Pennzoil, as well as synthetic-blends Trop Artic and Motorcraft, and full-synthetic Pennzoil Platinum, Quaker State Advanced Full Synthetic and Mobil 1 Extended Performance.
Seven tests were run on the motor oils.

The Thin-Film Oxygen Uptake Test (TFOUT) measures the oxidation stability of engine oils. The High Temperature/High Shear Test (HTHS) measures a lubricant’s viscosity under severe operating conditions.

The NOACK Volatility Test measures the evaporation loss of oils in high temperature service.
Pour Point indicates the lowest temperature at which a fluid will flow. Total Base Number (TBN) is the measurement of a lubricant’s reserve alkalinity for combating acids. The Cold Cranking Simulator Test (CCS) indicates the degree to which a lubricant can impact cold weather starting. The impressive test results show AMSOIL Synthetic 10W-30 Motor
Oil outperformed the competitors in nearly every test.

ASTM Thin Film Oxygen Uptake Test Image - File Size: 56.2 KB

EXTENDS OIL LIFE:

The Thin Film Oxygen Uptake Test (TFOUT) is used to evaluate engine oil’s ability to resist heat and oxygen breakdown when contaminated with oxidized/ nitrated fuel, water, and soluble metals such as lead, copper, iron, manganese and silicon. This test is designed to mimic the operating conditions of a gasoline engine.

AMSOIL 10W-30 Synthetic Motor Oil has superior heat and oxidation resistance to control sludge deposits and extend oil life. Engines stay clean for maximum protection and oil changes are reduced, saving time and money.

ASTM High Temperature / High Shear Test Image - File Size: 61.2 KB

PROTECTS HOT ENGINES:

The High Temperature/High Shear Test measures a lubricant’s viscosity under severe high temperature and shear conditions that are similar to severe service applications in an engine. In order to prevent wear, it is important for a lubricant to maintain its protective viscosity
level under severe operating conditions.

AMSOIL 10W-30 Synthetic Motor Oil does not “shear back” and thin out like other motor oils. Its superior viscosity stability provides unsurpassed bearing protection for dependable engine operation, especially during hot operating conditions.

ASTM Noak Volatility Test Image - File Size: 70.0 KB

MAXIMIZES FUEL ECONOMY, REDUCES OIL CONSUMPTION AND EMISSIONS:

The NOACK Volatility Test determines the evaporation loss of lubricants in high temperature service. The more motor oils vaporize, the thicker and heavier they become, contributing to poor circulation, reduced fuel economy and increased oil consumption, wear and
emissions.

AMSOIL 10W-30 Synthetic Motor Oil resists high temperature volatilization (evaporation) better than other motor oils. AMSOIL Synthetic Motor Oil maintains peak fuel efficiency and reduces oil consumption and emissions.

ASTM Cold Cranking Viscosity Test Image - File Size: 66.6 KB

IMPROVES COLD TEMPERATURE STARTUP:

The Pour Point Test determines the lowest temperature at which a lubricant will flow. The lower a lubricant’s pour point, the better protection it provides in low temperature service.
Unlike conventional oils that solidify in cold temperatures, AMSOIL 10W-30 Synthetic Motor oil remains fluid down to -58° F.

AMSOIL Synthetic Motor Oil helps engines turn over easier and flows quickly to engine parts for critical start-up protection. Engines start faster and wear is greatly reduced for extended engine life.

ASTM Total Base Number Test Image - File Size: 65.6 KB

CONTROLS ACID FORMATION:

Total Base Number (TBN) is the measurement of a lubricant’s reserve alkalinity, which aids in the control of acids formed during the combustion process. The higher a motor oil’s TBN,
the more effective it is in suspending wear-causing contaminants and reducing the corrosive effects of acids over an extended period of time.

The high TBN of AMSOIL Synthetic 10W-30 Motor Oil allows it to effectively combat wear-causing contaminants and acids, providing superior protection and performance over extended drain intervals.

ASTM Pour Point Test Image - File Size: 51.2 KB

HELPS ENGINES START EASIER:

The Cold Crank Simulator Test determines the apparent viscosity of lubricants at low temperatures and high shear rates. Viscosity of lubricants under these conditions is directly
related to engine cranking and startability. The lower a lubricant’s cold crank viscosity, the easier an engine will turn over in cold temperatures.

The low cold crank viscosity of AMSOIL Synthetic 10W-30 Motor Oil reduces drag on moving engine parts and allows engines to achieve critical cranking speed in extremely frigid temperatures. Engines turn over quickly and dependably in the coldest winter temperatures.

ASTM Four Ball Wear Test Image - File Size: 59.0 KB

Four Ball Wear Test Illustrates
PROTECTION AGAINST WEAR

The Four-Ball Wear Test evaluates the protection provided by engine oil under conditions of pressure and sliding motion. The size of the scar left as a result of the test determines the
amount of wear protection the lubricant provides. The smaller the wear scar, the better the protection.

Tests show that AMSOIL 10W-30 Synthetic Motor Oil has better anti wear performance than all other oils tested. With AMSOIL Synthetic Motor Oil, engine life can be extended and major repairs are often reduced.

AMSOIL Performance Test Results in this Page has Become Outdated

Please find below, current AMSOIL Performance Tests

Taxi Fleet TestLas Vegas Taxi Cab Field Study
Test Results for Signature Series Motor Oils & ATF
Few applications place more stress on lubricants than taxi cabs, particularly those operating in the desert heat of Las Vegas, Nev. The combination of excessive idling, stop-and-go driving and high ambient temperatures creates the ideal scenario for lubricant failure, resulting in sludge formation and catastrophic component failure.

Motor Oil Comparison 2013Motor Oil Comparison 2013
10 Motor Oils Tested in 5 Performance Areas
Laboratory bench testing conducted in accordance with American Society of Testing and Materials (ASTM) procedures examined several important areas of motor oil performance, including resistance to deposit formation, wear protection, high-temperature stability, resistance to acid formation and cold-temperature performance.

Diesel Fleet Fuel Economy Study in Stop-and-Go City Conditions (G3086)Diesel Fleet Fuel Economy Study in
Stop-and-Go City Conditions (G3086) (368k PDF)
The industry-standard SAE J1376 Fuel Economy Measurement Test (Engineering Type) for Buses and Trucks reveals AMSOIL synthetic lubricants can increase fuel economy in class 8 diesel trucks used in stop-and-go city driving conditions and, in this case, did by 3.15 percent.

Marine E-TEC Field Study (G2968)Marine E-TEC Field Study (G2968) (1.2 MB PDF) AMSOIL HP Marine Synthetic 2-Stroke Oil prevented piston skirt scuffing and cylinder bore scuffing in a 250-hp Evinrude E-TEC marine engine during more than 500 hours of real-world use at the engine's lean-mix oil setting.

A Study of INTERCEPTOR Synthetic 2-Stroke Oil for Ski-Doo Rotax E-TEC Engines (G3039)A Study of INTERCEPTOR® Synthetic 2-Stroke Oil
for Ski-Doo Rotax E-TEC Engines (G3039) (1.4 MB PDF)
AMSOIL subjected INTERCEPTOR® Synthetic 2-Stroke Oil to 50 hours of severe-duty engine testing and two industry-standard ASTM tests to demonstrate that INTERCEPTOR exceeds the performance requirements of high-performance DFI snowmobile engines in severe operating conditions.

3,469-Mile Case Study in Rotax E-TEC Engine (G3038)3,469-Mile Case Study in Rotax E-TEC Engine (G3038) (1.1 MB PDF) AMSOIL submitted the pistons from a Ski-Doo Rotax E-TEC 800R engine to an ASTM-calibrated rater following 3,469 miles of aggressive trail riding to reveal that AMSOIL INTERCEPTOR® Synthetic 2-Stroke Oil provided outstanding protection and prevented piston skirt scuffing and ring sticking.

AMSOIL Premium API CJ-4 5W-40 Synthetic Diesel Oil (DEO) Fuel Economy (697k PDF)AMSOIL Premium API CJ-4 5W-40
Synthetic Diesel Oil (DEO) Fuel Economy (697k PDF)
The Environmental Protection Agency (EPA) Federal Test Procedure (FTP) confirms AMSOIL Premium API CJ-4 5W-40 Synthetic Diesel Oil (DEO) improves fuel economy through virtually all driving scenarios compared to conventional 15W-40 diesel oil.

AMSOIL Premium API CJ-4 5W-40 Synthetic Diesel Oil (DEO) Shear Stability (644k PDF)AMSOIL Premium API CJ-4 5W-40
Synthetic Diesel Oil (DEO) Shear Stability (644k PDF)
Kurt Orbahn Shear Stability testing (ASTM D-6278) reveals AMSOIL Premium API CJ-4 5W-40 Synthetic Diesel Oil (DEO) maintains outstanding shear stability, even at 4 percent fuel dilution. Note: All oils were available to consumers at the time of testing. Testing completed September 2009. Test results do not represent future formulation changes.

AMSOIL Premium API CJ-4 5W-40 Synthetic Diesel Oil (DEO) TBN and Viscosity (363k PDF)AMSOIL Premium API CJ-4 5W-40
Synthetic Diesel Oil (DEO) TBN and Viscosity (363k PDF)
Compared with competing diesel oils, AMSOIL Premium API CJ-4 5W-40 Synthetic Diesel Oil (DEO) provided superior TBN and viscosity retention over 400 hours of severe-service operation in a refuse hauler fleet employing Navistar DT466 diesel engines, which are notoriously hard on motor oil. Note: All oils were available to consumers at the time of testing. Testing completed August 2010. Test results do not reflect future formulation changes.

Diesel Recovery Cold Filter Plugging Point (794k PDF)Diesel Recovery Cold Filter Plugging Point (794k PDF) Cold Filter-Plugging Point (CFPP) testing shows AMSOIL Diesel Recovery (DRC) lowers the cold filter-plugging point of diesel fuel more effectively than the competing brand. Note: All additives were available to consumers at the time of testing. Testing completed August 2009. Test results do not reflect future formulation changes.

Diesel Fleet Fuel Economy Study (G2904)Diesel Fleet Fuel Economy Study (G2904) Testing completed in compliance with the industry-standard SAE J1321 In-Service Fuel Consumption Test Procedure demonstrates use of AMSOIL synthetic lubricants can increase fuel economy in short- to medium-haul diesel applications and, in this case, did by 6.54 percent.

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