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 AMSOIL
Synthetic 10W-30 Motor Oil (ATM) and 10 competing
conventional and synthetic 10W-30 motor oils were
subjected to a series of API motor oil tests.
The competing oils included petroleum-based Castrol
GTX Drive Hard, Mobil Drive Clean, Pennzoil with
Purebase, Quaker State Peak Performance and Valvoline,
as well as synthetic-based Valvoline Synpower,
Quaker State, Castrol Syntec, Pennzoil and Mobil
1 SuperSyn Multi-Vehicle.
Seven
API 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)
measures a lubricant's viscosity at low temperatures
and high shear rates. The Four-Ball Wear Test
measures a lubricant's wear protection properties.
The impressive test results show AMSOIL Synthetic
10W-30 Motor Oil outperformed the competitors
in each test.
Thin-Film
Oxygen Uptake (ASTM D-4742):
The Thin-Film Oxygen Uptake Test
evaluates the oxidation stability of lubricating
oils. A mixture of the test oil and chemistries
found in gasoline engine operation (oxidized/nitrated
fuel, soluble metals and distilled water) are
placed in a test vessel, which is pressurized
with oxygen and placed in a heated bath. Anti-oxidant
breakdown is evident when the oxygen pressure
in the vessel rapidly decreases. At this point,
the induction time (break point) of the oil is
recorded. As shown in the graph, AMSOIL Synthetic
10W-30 Motor Oil had the highest induction time
of all the tested oils. In fact, it didn't reach
its break point in over 500 minutes of testing.
The superior oxidation stability of AMSOIL Synthetic
10W-30 Motor Oil allows it to effectively resist
the formation of engine deposits and sludge, keeping
engines running clean and efficient and extending
oil life. It also resists thickening, maintaining
its superior wear protection and lubricating properties
and maximizing fuel efficiency.
High
Temperature/High Shear (ASTM D-4683):
The High Temperature/High Shear
Test measures a lubricant's viscosity under severe
high temperature and shear conditions that resemble
highly-loaded journal bearings in fired internal
combustion engines. In order to prevent bearing
wear, it is important for a lubricant to maintain
its protective viscosity under severe operating
conditions. The minimum High Temperature/High
Shear viscosity for a 30 weight oil is 2.9 cP.
As shown in the graph, AMSOIL Synthetic 10W-30
Motor Oil surpasses this minimum standard and
displayed the highest High Temperature/High Shear
viscosity in the group.
The superior viscosity retention of AMSOIL Synthetic
10W-30 Motor Oil in the face of severe temperature
and shear conditions allows it to provide continuous,
unsurpassed protection for engine bearings, extending
equipment life and preventing wear.
 NOACK
Volatility (ASTM D-5800):
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. A maximum of 15 percent evaporation
loss is allowable to meet API SL and ILSAC GF-3
specifications. As shown in the graph, AMSOIL
Synthetic 10W-30 Motor Oil outperformed its nearest
competitor by over 30 percent.
The extremely low volatility of AMSOIL Synthetic
10W-30 Motor Oil allows it to maintain its superior
protective and performance qualities throughout
extended drain intervals, even when faced with
severe operating temperatures. In addition, oil
consumption and emissions are minimized and fuel
efficiency is maximized.
 Pour
Point (ASTM D-97):
The Pour Point Test determines
the lowest temperature at which a lubricant will
flow when cooled under prescribed conditions.
The lower a lubricant's pour point, the better
protection it provides in low temperature service.
As shown in the graph, AMSOIL Synthetic 10W-30
Motor Oil has the lowest pour point of the tested
oils.
The low pour point of AMSOIL Synthetic 10W-30
Motor Oil allows it to maintain its fluidity in
extremely low temperatures, reducing drag on moving
vehicle parts, providing critical engine components
with quick, essential lubrication and easing startup
in cold temperatures. Wear is greatly reduced
and equipment life is extended.
 Total
Base Number (ASTM D-2896):
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. As shown
in the graph, AMSOIL Synthetic 10W-30 Motor Oil
has the highest TBN of the tested oils.
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.
Cold
Crank Simulator (ASTM D-5293):
 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. 10W motor oils
are tested at -25°C and must have a viscosity
below 7000 cP to pass. As shown in the graph,
AMSOIL Synthetic 10W-30 Motor Oil is well below
the maximum requirement, while many of the competing
oils barely pass.
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.
Four
Ball Wear (ASTM D-4172):
 The
Four Ball Wear Test determines the wear protection
properties of a lubricant. Three metal balls are
clamped together and covered with the test lubricant,
while a rotating fourth ball is pressed against
them in sliding contact. This contact typically
produces a wear scar, which is measured and recorded.
The smaller the average wear scar, the better
the wear protection provided by the lubricant.
As shown in the graph, AMSOIL Synthetic 10W-30
Motor Oil produced the smallest wear scar of the
tested lubricants.
AMSOIL Synthetic 10W-30 Motor Oil provides unsurpassed
protection against engine wear. Equipment life
is extended, and repairs, downtime and expenses
are reduced.
 AMSOIL
INC. has been the leader in synthetic motor oil
formulation since its introduction of the world's
first API rated synthetic motor oil in 1972. By
specializing exclusively in synthetic lubricant
technology, AMSOIL is able to optimize the most
advanced chemistries available. The "Genuine Synthetic
PAO Formulated" designation displayed on AMSOIL
packaging indicates that the oils are formulated
with Polyalphaolefin (PAO) synthetic base stocks.
This chemistry is the industry's premier base
stock technology. Unlike conventional mineral-based
chemistries, AMSOIL PAO base stocks contain fully
saturated, hydrogenated molecules and are free
of wax and other impurities. Combined with an
exact balance of premium additives, it delivers
superior hot and cold temperature performance,
resists oxidation and acid formation and provides
long-term wear protection. AMSOIL "Genuine Synthetic
PAO Formulated" oils have shattered the parameters
of the most rigorous industry testing and set
the standard for all other motor oils.
AMSOIL is the undisputed leader in
synthetics.............
Since
1972, AMSOIL Synthetics have proven to be the
BEST. AMSOIL also engineers
and manufactures Super Duty Oil filters which
have a 12,500 mile service life as well as specialized
filtration systems for commercial and fleet applications
in cars and light, medium and heavy trucks which
can filter particles down to less than one micron
( a standard full flow oil filter can only filter
to 20-25 microns with any degree of efficiency)
making oil changes virtually unnecessary and
virtually eliminating engine wear. These filters
have been proven by millions of miles of over-the
road trucks, construction equipment and fleet
service.
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