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Which AMSOIL Products Are Recommended
For Your Vehicles?
Hot and Cold Temperature Extremes
Call for Superior Motor Oils
A significant challenge faced
by today's motor oil is maintaining an adequate level of protection
during high temperature conditions. Without a quality motor
oil protecting it, an engine can be damaged through motor
oil breakdown, viscosity increase and deposits - all caused
by excessive heat.
motor oils are subject to vaporization when exposed to high
heat. How much an oil vaporizes is measured by the NOACK
Volatility Test (ASTM D-5800). Conventional motor oils
tend to vaporize the most, the lightest fractions evaporating
first and leaving behind a thicker, harder-to-pump motor oil.
The uniformly sized molecules of synthetic motor oils are
much more resistant to vaporization. Less oil evaporates and
viscosity remains consistent.
The flash point of a motor oil
is the lowest temperature at which application of a flame
will cause lubricant vapors to ignite. Higher quality base
stocks exhibit higher flash points, and the higher a motor
oil's flash point, the better the protection.
AMSOIL motor oils are formulated
with high flash points, keeping volatization to an absolute
minimum and maintaining their superior protective and performance
qualities in extreme heat conditions. In fact, a look at the
chart shows AMSOIL 5W-30 Synthetic Motor Oil loses significantly
less of its original weight during high-temperature service
when compared with competing motor oils.
As motor oils operate in high
heat, especially over extended periods, they tend to thin
out and lose their ability to provide adequate wear protection.
Viscosity Index (VI) indicates the degree of an oil's viscosity
change over a given temperature range (between 40° C and
100° C). The higher a motor oil's VI number, the better
it is able to maintain its viscosity over a broad temperature
range, translating into better wear protection in both hot
and cold temperatures. Motor oils with low VI do a poor job
of maintaining viscosity in temperature extremes. They are
very viscous (thick) at low temperatures, while very thin
at high temperatures.
Motor oils formulated with synthetic
base stocks usually have naturally high VI numbers, giving
them the ability to resist viscosity change in high-temperature
operation. Conventional motor oils, on the other hand, require
high amounts of viscosity index improvers that increase the
relative viscosity of motor oils during high temperature operation.
Viscosity index improvers can be thought of as springs, coiling
at cold temperatures and uncoiling in high temperatures. Uncoiling
makes the molecules larger, increasing internal resistance
within the thinning oil and reducing the overall viscosity
loss of the fluid.
AMSOIL Synthetic Motor Oils
have "ultra high" viscosity indices, allowing them
to stay in grade and provide superior wear protection throughout
extended drain intervals. In fact, AMSOIL 10W-30 Motor Oil
was recently subjected to a triple length API
Sequence IIIF Test. Even after being subjected to the
test three times longer than the standard length, AMSOIL 10W-30
performed three times better than the standard test limits.
The competitor's motor oil showed dramatic viscosity increase
in less than half the time.
Oil heated in the presence of
air oxidizes, forming damaging acids and deposits. The higher
the temperature, the higher the rate of oxidation. Oxidation
inhibitors are added to motor oils to minimize the high-temperature
deterioration process, while detergents and dispersants minimize
the formation of sludge and deposits, neutralize acids and
hold solid contaminants in suspension.
AMSOIL Synthetic Motor Oils
are formulated with the highest quality additive packages,
resisting the damaging effects of heat and oxidation much
longer than conventional motor oils and keeping engines running
clean and deposit-free.
In order to start effectively,
engines must reach a critical cranking speed. As temperatures
drop, achieving critical cranking speed becomes more of a
challenge. Low temperatures cause motor oils to thicken, and
if they thicken too much and impose excessive drag on moving
parts, critical cranking speed will not be achieved and the
engine will fail to start.
Motor oils used in winter climates
must maintain a sufficient low cranking viscosity to allow
engine turnover at the lowest temperatures. If a motor oil
is able to meet the challenge of allowing the engine to turn
over, it immediately faces another significant challenge:
providing quick, critical lubrication to the engine's bearings
and other moving parts.
Two types of engine pumping
failures can result from cold-thickened motor oil: air-binding
failure and flow-limited failure. Air-binding failure occurs
when the motor oil surrounding the pump inlet screen gets
sucked into the pump, but is not replaced by new oil from
the sump. The oil pump inlet screen then becomes starved for
fluid, and oil pressure becomes erratic as air is entrained
and proper oil flow cannot be maintained. Flow-limited failure
occurs when the motor oil becomes so thick that it cannot
be pumped through the inlet tube and through the narrow passages
that deliver the oil to the engine's moving parts.
All motor oils thicken in cold
temperatures, but how much they thicken is significant to
the level of protection an engine receives. Pour
point tests (ASTM D-97) pin-point the temperature at which
a motor oil thickens to the point where it ceases to flow.
Of course, when oil stops flowing altogether, it is useless.
For an engine to receive even minimal wear protection from
an oil, it is important it has a pour point lower than typical
Conventional motor oils face
significant challenges in low temperatures because they contain
paraffinic (wax) materials. As temperatures drop, the wax
components crystallize and agglomerate into large structures.
Eventually, the motor oil gels, becomes resistant to flow
and fails to provide the engine with the lubrication it needs.
In order to hinder the development of these wax crystals,
conventional motor oils are additized with polymers known
as pour point depressants. These pour point depressants prevent
wax crystals from agglomerating and can lower the oil's pour
point. In fact, petroleum motor oil without additives typically
has a pour point of only around 5° F, but the inclusion
of pour point depressants can lower the pour point by approximately
Synthetic motor oils do not
contain the paraffinic material present in conventional motor
oils, so they do not require pour point additives. Synthetic
motor oils naturally flow at much lower temperatures than
conventional oils, maintaining their cold-temperature protection
properties over a longer period of time.
Cold weather operation also
increases problems associated with condensation. The colder
the weather, the longer it takes for the engine to warm to
the point where condensation evaporates. During short trips,
the engine may not have a chance to evaporate the condensation
at all. Eventually, condensation causes acids to form in the
oil, causing corrosion.
Rust and corrosion inhibitors
serve to neutralize and protect engines against water and
acids. These oil-soluble additives have a greater affinity
for metal than water, forming a protective film on engine
parts. The Total
Base Number (TBN) of a motor oil is an indication of how
well it combats acids. The higher the TBN number, the greater
the degree of protection.
AMSOIL Motor Oils are formulated
with high TBN. In fact, AMSOIL 5W-30, 10W-30 and 0W-30 Motor
Oils all have TBN's over 11, allowing them to effectively
fight acid and corrosion for extended drain intervals.
AMSOIL Synthetic Motor Oils
remain fluid in the coldest operating conditions. Maintaining
their fluidity and protecting ability in temperatures as frigid
as -60° F, AMSOIL not only permits easy engine cranking
for quick starts, but flows to critical engine components
in a quarter of the time that conventional oils take. Considering
that up to 60 percent of all engine wear occurs during cold
starts, this immediate lubrication is essential to long-term
More AMSOIL Performance Tests |
Why Motor Oil Deteriorates
It is common knowledge
that, at some point, engine oil must be changed. It's something
that is preached relentlessly to vehicle owners by vehicle
manufacturers, quick lubes and oil companies. But consumers
are widely unaware of what exactly makes oil changes necessary.
Many factors contribute
to a motor oil's demise, but it is essentially the accumulation
of contaminants in the oil and chemical changes in the oil
itself that make a motor unfit for further service. With time,
it is inevitable that the oil will be contaminated by dirt
or sludge, or succumb to the extreme pressures or temperatures
found inside an engine. AMSOIL Motor Oils are formulated with
the industry's most advanced synthetic base stocks and additive
packages to combat the forces that deteriorate conventional
What is the NOACK Volatility
Volatization is a term used to describe
what happens to a fluid as it is heated to the point it begins
to "boil off." Upon reaching a certain temperature,
oil will begin to lose some of its lighter weight molecules
as they "boil off" and leave heavier weight molecules
behind. Not only does this cause higher oil consumption, this
process can also cause increased viscosity making the oil
more difficult to circulate through the lubrication system.
Quality Takes Priority at AMSOIL
The AMSOIL chemical
laboratory plays an important role in the daily operations
at AMSOIL headquarters. The lab fulfills tech service requests,
performs competitor testing and comparisons, and works on
the research and development of products at AMSOIL. One of
the most important jobs at the lab is quality control. AMSOIL
is known for formulating high-quality products and the AMSOIL
chemists ensure that everything coming in and going out meets
AMSOIL standards. How do they do it? (read
Synthetic Motor Oils offer the longest drain intervals
on the market, unsurpassed protection and performance that
effectively extends equipment life and improved fuel economy,
saving customers money at the pump and reducing the nation's
dependence on foreign oil.
INC. warrants that the use of its lubricants will not cause
mechanical damage to any mechanically sound equipment when
AMSOIL INC. products are used in full compliance with the
company's recommendations and instructions."
synthetic motor oils are formulated to surpass engine test
specifications, offering protection far greater than competing
motor oils for extended drain intervals. Most synthetic oil
manufacturers make no claim to extended drain intervals, deferring
to the maintenance schedule provided by the vehicle manufacturer.
With its unparalleled oil and warranty program, AMSOIL offers
consumers unprecedented protection and economics.
More than 20 years
ago, AMSOIL began using the NOACK volatility test as a comparison
tool and measurement of quality. Back then, nearly every oil
tested side-by-side with AMSOIL synthetic motor oils failed,
and those that passed barely squeaked by. Other oil companies
paid no attention to NOACK results until Ford Motor Company
made it a requirement for service fill oils, validating what
AMSOIL had said all along.
NOACK Volatility Test
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
Synthetic Motor Oil resists high temperature volatization
better than other motor oils. AMSOIL Synthetic Motor
Oil maintains peak fuel efficiency and reduces oil consumption
AMSOIL Now An ISO Certified
received ISO 9001:2000 certification of our Quality Management
System (QMS). NSF International Strategic Registrations is
the registrar that has verified our QMS meets the requirements
of the ISO 9001:2000 standard, the most widely utilized quality
standard throughout the world for quality management systems.
ISO standards are used by over 300,000 companies worldwide
setting rigorous standards for businesses, government and
is applicable to any manufacturing and service organization
providing a framework for system development that focuses
on the customer, quality system performance and ongoing improvement.
AMSOIL received ISO 9001:2000 registration under the scope:
synthetic lubricants blending, packaging, and other fulfillment
directly associated with lubricant product.
certification puts AMSOIL in line with some of the most efficient
companies in the world. It is further assurance that the products
and services AMSOIL provides will continue to maintain the
high level of quality the company always demanded.
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