The Thin Film Oxygen Uptake Test (TFOUT) uses the ASTM
D4742 test protocol. This test is used to evaluate an
engine oils ability to resist heat and the debilitating oil
life shortening effect of oil oxidation. This ASTM test is
designed to put an oil in an environment that simulates
the severe operating environment of an engine. In this test
an engine oil sample, a fuel catalyst, a metal
catalyst package (using reactive metals such as copper)
and water are added to a vessel that is then
pressurized with oxygen to 90 psig.
Pressure inside the vessel is recorded electronically or
mechanically while the vessel is rotated at 100 rpm at constant
(high) temperature. The objective is to measure how many
minutes it takes to get a measurable drop in pressure, which
signifies the point at which the motor oil starts to absorb
the oxygen from the environment. This pressure drop point
indicates the onset of oil oxidation. The test is run out to
500 minutes. The longer an oil lasts in this test
(meaning the more minutes an oil lasts in the test),
the better its inherent oxidation stability is,
signifying an ability to last longer in service within an
engine due to superior oxidation resistance.
AMSOIL AME is much superior to Hydrotex in heat
and oxidation resistance to control the rate of oil
oxidation and safely extend the life of the motor oil.
Engines stay clean for maximum protection and the need for
unnecessary oil changes are reduced, saving the user
time and money.
Engines Start Easier
The cold crank simulator test (CCS) determines the apparent
viscosity of lubricants at low temperatures and high shear
rates. The viscosity of lubricants under these conditions is
directly related to engine cranking and startability. The lower
the CCS number, the easier an engine will turnover in
outperforms HYDROTEX 15W40. Using AMSOIL AME lubricant reduces
drag on moving engine parts and allows engines to turnover quickly
in the coldest winter temperature. The easier an engine starts,
the less wear that will occur at startup, and the less wear
and tear there will be on the battery required to start the engine.
AME Reduces Oil Consumption and
Volatility Test determines the evaporation loss of lubricants in
high temperature service. The more motor oil that vaporizes in
operation, the thicker and heavier that oil becomes,
contributing to poor or reduced oil circulation, reduced fuel
economy, increased oil consumption, increased wear and needless
evaporative oil loss (emissions) into the environment.
to a superior NOACK Volatility rating, AMSOIL AME resists
evaporation much better than HYDROTEX. This means that the oil
retains its viscosity better, oil circulation is not impaired,
fuel economy is maximized, oil consumption is minimized, wear is
reduced and the environment is protected.
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 lubricant
protection that is provided in low temperature service.
AMSOIL AME has
much lower pour point than HYDROTEX.
and HYDROTEX were both formulated with high TBN number.
and HYDROTEX perform similarly in four ball wear test
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