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Which AMSOIL Products Are Recommended
For Your Vehicles?
AMSOIL Synthetic Motorcycle
Oils Offer Superior Engine, Transmission and Rust Protection
Motorcycle Oils have been re-formulated with new high performance
additive technology that provides even greater multi-functional
benefits for the special requirements of motorcycle applications.
These independent and exclusive new AMSOIL formulations provide
second-to-none viscosity protection for hot running American
and foreign motorcycle engines, transmissions and primary
20W-50 Synthetic Motorcycle Oil (MCV) is recommended for
Harley-Davidson, Buell, Victory, Ducati, BMW, Aprilla and
Triumph motorcycles calling for a 15W-50 or 20W-50 viscosity,
providing superior protection in engines, transmissions and
10W-40 Synthetic Motorcycle Oil (MCF) is recommended for
Honda, Kawasaki, Yamaha, Suzuki, BMW, Husqvarna and KTM motorcycles
calling for a 10W-40 or 20W-40 viscosity, providing superior
protection in engines and transmissions.
Synthetic Motorcycle Oils not only provide superior protection
for motorcycle engines, they also provide superior gear protection,
meeting API GL-1 gear lube viscosity requirements. AMSOIL
Synthetic 10W-40 Motorcycle Oil (MCF) meets SAE 80W-90 gear
lube requirements, while AMSOIL Synthetic 20W-50 Motorcycle
Oil (MCV) meets SAE 90 gear lube viscosity requirements.
Viscosity is the
most important characteristic of a lubricant. Motorcycle gears
create a shearing effect that causes permanent oil viscosity
loss. This thinning effect reduces the oil's ability to prevent
metal-to-metal contact and wear. The stability and natural
operating temperature ranges of the premium synthetic base
stocks used to formulate AMSOIL Synthetic Motorcycle Oils
eliminate shear and reduce wear. AMSOIL Synthetic Motorcycle
Oils exhibit absolute shear stability as measured by the Kurt
Orbon shear stability test.
The high temperatures
and tight tolerances common to motorcycle applications also
affect viscosity. The High Temperature/High Shear (HTHS) Test
(ASTM D-4683) measures a lubricant's viscosity under severe
high temperature and shear conditions. The more resistant
an oil is to high temperature viscosity loss, the better it
protects, and even a HTHS difference of 0.1 cP makes a significant
Motorcycle Oils exhibit higher HTHS viscosities than competing
conventional and synthetic motorcycle oils. AMSOIL Synthetic
20W-50 and 10W-40 Motorcycle Oils displayed the highest High
Temperature/High Shear viscosities in their respective test
groups, providing motorcycle engines and transmissions operating
in the harshest conditions with superior protection against
wear and viscosity loss and eliminating the need for separate
gear case oils as recommended by some competitors. Synthetic
10W-40 may also be used in two-cycle transmissions.
Wet Clutch Performance
utilize a clutch that is immersed in the motor oil. The friction
modifiers present in many automotive motor oils and the extreme
pressure additives present in EP gear lubricants produce a
low coefficient of friction between the clutch discs and plates,
resulting in clutch slippage and glazing. Slippage leads to
increased operating temperatures and reduced clutch life.
AMSOIL Synthetic Motorcycle Oils are formulated without friction
modifiers, providing positive clutch engagement, longer equipment
life and reduced temperatures. AMSOIL Synthetic Motorcycle
Oils meet the clutch compatibility requirements mandated by
spend the majority of their lives either parked or in storage,
but most motorcycle oils fail to address corrosion problems.
Corrosion protection during storage and in humid conditions
is essential to extending equipment life. AMSOIL Synthetic
Motorcycle Oils are formulated with specialized additive technology
that not only protect against corrosion and acids during operation,
but also provide exceptional protection during storage. The
ASTM D-1748 Rust Test measures a lubricant's ability to protect
against rust and corrosion. A standard metal reference coupon
is immersed in the test oil before being placed in a humidity
cabinet for 24 hours at 120 degrees F. The reference coupon
treated with AMSOIL 20W-50 Synthetic Motorcycle Oil showed
no signs of rust and corrosion, while the competitor failed
in demanding, high heat conditions that require robust high
temperature deposit control additives. While many conventional
oils break down and oxidize when faced with high temperatures,
causing formation of carbon and sludge deposits, AMSOIL Synthetic
Motorcycle Oils effectively withstand oil breakdown and oxidation,
keeping equipment running cooler and minimizing oil consumption,
thickening and emissions. Air-cooled engines get especially
hot while idling in traffic, commonly reaching temperatures
up to 240 degrees Fahrenheit. The extra margin of protection
provided by AMSOIL Synthetic Motorcycle Oils is especially
important for hot running air cooled motorcycle engines.
High engine speeds
and transmission gears in motorcycles churn the oil, suspending
air and causing foam. When this oil and air mixture is drawn
into a load area, the air compresses and decreases the thickness
of the oil film, compromising wear protection. In addition,
suspended air promotes oil oxidation, reducing its service
life. AMSOIL Synthetic Motorcycle Oils greatly reduce foaming
to provide long term lubricating protection in high speed,
high RPM conditions.
motor oil regulations have limited certain additive levels,
including the anti-wear additive known as ZDDP. ZDDP is an
extremely effective anti-wear, anti-oxidant additive, and
reducing its level results in compromised wear control and
shortened service life. Because motorcycle applications require
robust additive systems to control wear and oxidation, use
of an automotive motor oil or an automotive motor oil re-labeled
as a motorcycle oil compromises protection and performance.
AMSOIL Synthetic Motorcycle Oils are overtreated with robust
additive packages, including high levels of calcium, phosphorus,
zinc and additional oxidation inhibitors, to extend oil life
expectancy, provide unmatched engine cleanliness and greatly
Synthetic Motorcycle Oils are recommended for twice the
manufacturer's recommended drain interval for on-road motorcycles.
The four Ball Wear
Test (ASTM D-4172) determines the wear protection properties
of a lubricant. The smaller the average wear scar, the better
the wear protection provided by the lubricant. AMSOIL Synthetic
Motorcycle Oils produce significantly smaller wear scars than
competing motorcycle oils, providing unsurpassed protection
against engine wear, reducing maintenance costs and extending
Motorcycle Oils provide excellent cost effectiveness and are
cost competitive with competing high end motorcycle oils.
The unmatched protection and performance provided by AMSOIL
Synthetic Motorcycle Oils is excellent insurance for today's
expensive motorcycles and custom bikes.
Synthetic Motorcycle Oils
- Excellent for
roller bearings and does not cause "skate" or
"float" in V-Twin Engines
- Prevents foaming
in high-RPM engines
- Eliminates the
need for multiple lubricants
- Absolute shear
stability maintains protective viscosity in high heat, high
- Better performance
and price than competitive motorcycle oils
for twice the manufacturer's recommended drain interval
for on-road motorcycles
- Provide exceptional
protection against rust and corrosion during storage
- Robust anti-wear
additive packages provide superior wear protection and longer
Motorcycle Oil Study compares the test results of
26 different motorcycle oils in the most critical areas of
motorcycle oil performance, including wear protection, shear
stability and rust protection, helping consumers make educated
decisions regarding which oil to use in their motorcycles.
Download the Motorcycle
Oil Study to see all the test results.
Motorcycle Oil Filters
Ea Motorcycle Oil Filters feature full-synthetic nanofiber
technology. It is the nanofibers that allow Ea Filters to
provide greater efficiency than any other filter available.
Ea Filters stop more particles, stop smaller particles and
last longer than any other oil filter available for motorcycle
Motorcycle Air Filters
Ea Motorcycle Air Filters with nanofiber technology hold
15 times more dust than wet gauze type filters. Nanofiber
media removes 5 times more dust than traditional cellulose
filters and 50 times more dust than than wet gauze type filters
while allowing more efficient air flow compared to traditional
Also visit the
Motorcycle Products Page
Davidson Owners Choose AMSOIL
Synthetic Motorcycle Oil Articles and Testimonials
NOACK Volatility Test
is a Critical Measurement of Motor Oil Quality
the first motor oil company in North America to use
the NOACK volatility test to measure motor oil quality
and performance. Although competing motor oil companies
initially paid no attention to NOACK results, the test
has since become a critical measurement tool throughout
designs generate more heat than ever, accentuating the
importance of the NOACK volatility test for determining
an oil's ability to provide an adequate level of protection
and performance. More horsepower, turbo chargers and
aerodynamic styling have created extremely hot environments
that receive less cooling from outside air, and high
heat leads to oil oxidation, deposits and thickening
in conventional oils.
for the current API SM motor oils specification, gasoline
motor oils cannot experience a weight loss of more than
15 percent in the NOACK test. AMSOIL Synthetic Motor
Oils were exceeding modern requirements over 20 years
ago, while many current motor oils still have a hard
time meeting this minimal requirement, increasing wear,
fuel consumption and emissions.
As seen in
the graph, AMSOIL Synthetic Motor Oil easily passes
the NOACK Test and falls well below the the maximum
15 percent volatilization (burn off) rate dictated by
the API SM motor oil specification, while the Royal
Purple volatilization (burn off) rate is over 11 percent
and the Lucas Oil FAILS the
test with a volatilization (burn off) rate of over 40
AMSOIL V-Twin Motorcycle
Oil Torture Test
What You Need To Know
About Motorcycle Oils
As with any vehicle equipped with an internal combustion engine,
proper lubrication is essential to insure performance and
longevity. It is important to point out that not all internal
combustion engines are similarly designed or exposed to the
same types of operation. These variations in design and operation
place different demands on engine oils. Specifically, the
demands placed on motorcycle engine oils are more severe than
those placed on automotive engine oils. Therefore, the performance
requirements of motorcycle oils are more demanding as well.
Though the degree may be debatable,
few will disagree that a difference exists between automotive
and motorcycle applications. In which area these differences
are and to what degree they alter lubrication requirements
are not clear to most motorcycle operators. By comparing some
basic equipment information, one can better understand the
differences that exist.
There are six primary differences
between motorcycle and automotive engine applications:
Operational Speed -
Motorcycles tend to operate at engine speeds significantly
higher than automobiles. This places additional stress on
engine components, increasing the need for wear protection.
It also subjects lubricating oils to higher loading and shear
forces. Elevated operating RPMs also promote foaming, which
can reduce an oil's load-carrying ability and accelerated
Compression Ratio -
Motorcycles tend to operate with higher engine compression
ratios than automobiles. Higher compression ratios place additional
stress on engine components and increase engine operating
temperatures. Higher demands are placed on the oil to reduce
wear. Elevated operating temperatures also promote thermal
degradation of the oil, reducing its life expectancy and increasing
the formation of internal engine deposits.
Density - Motorcycle engines produce nearly twice
the horsepower per cubic inch of displacement of automobile
engines. This exposes the lubricating oil to higher temperatures
Variable Engine Cooling
- In general, automotive applications usa a sophisticated
water-cooling system to control engine operating temperatures.
Similar systems can be found in motorcycle applications, but
other designs also exist. Many motorcycles are air-cooled
or use a combination air/oil design. Though effective, they
result in greater fluctuations in operating temperatures,
particularly when motorcycle are operated in stop-and-go traffic.
Elevated operating temperature promotes oxidation and causes
oils to thin, reducing their load carrying ability.
Functionality - In automotive applications, engine
oils are required to lubricate only the engine. Other automotive
assemblies, such as transmissions, have seperate fluid reservoirs
that contain a lubricant designed specifically for that component.
The requirements of that fluid differ significantly from those
of automotive engine oil. Many motorcycles have a common sump
supplying oil to both the engine and transmission. In such
cases, the oil is required to meet the needs of both the engine
and transmission gears. Many motorcycles also incorporate
a frictional clutch within the transmission that uses the
Motorcycles are typically used less frequently than automobiles.
Whereas automobiles are used on a daily basis, motorcycle
use is usually periodic and in many cases seasonal. These
extended periods of inactivity place additional stress on
motorcycle oils. In these circumstances, rust and acid corrosion
protection are of critical concern.
It is apparent that motorcycle
applications place a different set of requirements on lubricating
oils. Motorcycle oils, therefore, must be formulated to address
this unique set of high stress conditions.
Erik Buell Partners With
AMSOIL Synthetic Motorcycle
Oil is the Factory Fill Oil for EBR Buell Motorcycles
Consistent Clutch Feel
- Clutch slippage or inconsistent clutch feel can
prevent dirt bike riders from riding as fast or effectively
as they like. To keep the engine within the power band, riders
often modulate the clutch, increasing the opportunity for
clutch slippage if low-quality lubricants are used.
Synthetic Dirt Bike Oil's superior friction-durability
properties help minimize clutch slippage, fade and chatter,
giving riders consistent clutch feel during takeoffs or when
maneuvering around obstacles on the trail. In an extreme simulated-start
test, AMSOIL Synthetic Dirt Bike Oil continued to deliver
consistent clutch feel following 32 simulated race starts,
while a leading original equipment manufacturer (OEM)-branded
oil demonstrated inconsistent clutch-lever action and poor
clutch feel after 16 starts. The clutch plates lubricated
with AMSOIL Synthetic Dirt Bike Oil remained clean and in
good overall condition, while the plates using the OEM oil
revealed discoloration and wear. AMSOIL Synthetic Dirt Bike
Oil's superior performance helps instill in riders the confidence
that their bikes will perform consistently in all types of
Racing is Research -
AMSOIL corporately sponsored supercross and motocross racers
identified consistent clutch feel as a key performance attribute.
At the time, there was no dirt-bike-specific oil on the market
that provided the level of clutch consistency professional
and amateur riders demand. Consistent clutch feel is critical
to motocross riders during starts to keep the bike from lurching
forward prior to the gate dropping. Trail riders, meanwhile,
need consistent clutch feel to confidently navigate obstacles
without having to shift gears and lose momentum.
In-Depth Product Development
- The process to develop Synthetic Dirt Bike Oil
relied on a combination of lab and track testing. Clutch feel
is inherently subjective, which creates challenges in designing
a lubricant that delivers consistent clutch feel. To overcome
that challenge, AMSOIL designed The Extreme Simulated-Start
Test on Dirt Bikes. The test allows AMSOIL engineers to apply
accelerated stress to a dirt bike's clutch in order to monitor
clutch feel produced by a candidate lubricant.
The test uses a 2014 Honda CRF450R
attached to a dyno. While in second gear, the test administrator
holds the clutch at the point just prior to engagement, similar
to the way a rider would hold the bike in the gates during
a race start. The clutch is then released and the bike is
run to fourth gear, simulating the time from the drop of the
gate to the first corner in a race. The rear wheel is not
allowed to slip during the test, placing additional stress
on the clutch. Test administrators look for consistent lever
action and feel as they wait to let out the clutch and as
they shift the bike through the gears.
Synthetic Dirt Bike Oil was also subjected to extensive
on-track testing in the bikes of GEICO/AMSOIL/Honda Factory
Connection and other professional riders. A combination of
rider feedback and lab testing resulted in the final formulation
of Synthetic Dirt Bike Oil. Its performance in lab and track
testing dispels the myth that synthetics are "too slippery"
and make clutches slip. Results also demonstrate that AMSOIL
Synthetic Dirt Bike Oil delivers consistent clutch performance
while helping extend clutch life. (Buy
AMSOIL Dealer Michael Mathe's
2006 Harley-Davidson Sportster XL1200L with over 50,000 AMSOIL
AMSOIL Dealer Michael Mathe
Riding my AMSOIL protected 2012 BMW R1200RT on
"The Snake", Tennessee Hwy 421.
489 Curves in 12 Miles!
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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