AMSOIL Severe Gear Synthetic
Gear Lubes Demonstrate Superior Shear Stability
The extreme pressures
and temperatures generated by modern vehicles increase stress
on gear lubricants and can lead to a serious condition known
as thermal runaway. As temperatures in the differential climb
upward, gear lubricants lose viscosity and load carrying capacity.
When extreme loads break the lubricant film, metal-to-metal
contact occurs, increasing friction and heat. This increased
friction and heat, in turn, results in further viscosity loss,
which further increases friction and heat. As heat continues
to spiral upward, viscosity continues to spiral downward.
Thermal runaway is a vicious cycle that leads to irreparable
equipment damage from extreme wear, and ultimate catastrophic
gear and bearing failure.
In
order to ensure continued viscosity protection in high-shear
conditions, it is required that SAE 75W-140 automotive gear
lubes stay in grade throughout the CEC L-45-A-99 (KRL) 20-Hour
Shear Test. AMSOIL recently subjected Severe
Gear 75W-140 Synthetic Gear Lube (SVO) and four competing
75W-140 gear lubes to KRL shear stability testing.
SAE J306 standards
indicate SAE 140 gear lubes maintain a minimum 24.0 cSt viscosity.
Although each of the test oils met this standard before testing
began, each competitor failed to stay in grade following the
test. In fact, two experienced viscosity losses so dramatic
that they dropped well below SAE 140 requirements and all
the way down to an SAE 85 viscosity. AMSOIL
Severe Gear, on the other hand, easily retained its viscosity
within SAE J306 requirements, indicating its superior ability
to protect against thermal runaway by maintaining its protection
qualities in severe, high shear operating conditions.
AMSOIL also took
the opportunity to subject Severe
Gear 75W-110 Synthetic Gear Lube (SVT) to KRL testing.
SAE J306 standards dictate SAE 110 gear lubes maintain a minimum
18.5 cSt viscosity. Like Severe Gear 75W-140, SVT demonstrated
its superior protection qualities by easily retaining its
viscosity and staying in grade.
The graph
indicates the viscosity losses experienced by each of the
tested gear lubes:
The superior viscosity
protection, viscosity index and shear stability properties
of AMSOIL
Severe Gear Synthetic Gear Lubes effectively protect equipment
from the devastating effects of thermal runaway. Severe
Gear Synthetic 75W-90, 75W-110 and 75W-140 Gear Lubes
are ideal for severe-duty applications, including towing,
hauling, steep hill driving, commercial use, plowing, racing,
off-road use, rapid acceleration, frequent stop-and-go operation
and high ambient temperatures.
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Premium AMSOIL
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.
"AMSOIL 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."
AMSOIL
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.
Another
AMSOIL First
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.
THE
NOACK Volatility Test
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
Synthetic Motor Oil resists high temperature volatization
better than other motor oils. AMSOIL Synthetic Motor
Oil maintains peak fuel efficiency and reduces oil consumption
and emissions.
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Manufacturer
AMSOIL recently
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
industry.
ISO 9001:2000
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.
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In
order to ensure continued viscosity protection in high-shear
conditions, it is required that SAE 75W-140 automotive gear
lubes stay in grade throughout the CEC L-45-A-99 (KRL) 20-Hour
Shear Test. AMSOIL recently subjected 