| Motor Oils Tested |
Test Areas |
AMSOIL ATM
Mobil 1 Extended Performance
Quaker State Advanced Full Synthetic
Pennzoil Platinum
Trop Artic
Motorcraft
Castrol GTX
Chevron Supreme
Havoline
Formula Shell
Pennzoil |
Thin Film Oxygen Uptake
(ASTM D-4742)
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)
Four-Ball Wear (ASTM D-4172)
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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.
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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. |
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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.
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| 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. |
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| 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. |
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| 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. |
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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. |
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| 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 antiwear performance than all other oils
tested. With AMSOIL Synthetic Motor
Oil, engine life can be extended and major repairs are often reduced. |
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