Motor Oil Comparison Testing 2009
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
Seven tests were run on the motor oils. The
Thin-Film Oxygen Uptake Test (TFOUT) measures
the oxidation stability of engine oils. 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. A final test to compare cost per 25,000 miles of operation was also conducted to demonstrate the cost-effectiveness of using a synthetic oil over extended drain intervals. The impressive
test results show AMSOIL Synthetic 10W-30 Motor
Oil outperformed the competitors in nearly every
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
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.
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
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.
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.
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
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
Protects 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 antiwear
performance than all other oils
tested. With AMSOIL Synthetic Motor
Oil, engine life can be extended and
major repairs are often reduced.
By extending oil drain intervals through its
premium formulation, AMSOIL Synthetic
Motor Oil saves drivers money. A value comparison
shows AMSOIL Synthetic Motor Oil
costs less than competing motor oils over
While competing motor oils must be
changed up to fi ve times over 25,000 miles,
AMSOIL Synthetic Motor Oil is only changed
once, saving both time and money.
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