PRODUCT APPLICATION
AMSOIL 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 primary chaincases.
AMSOIL 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.
IMPROVED TRANSMISSION PROTECTION
AMSOIL 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 difference.
AMSOIL Synthetic Motorcycle Oils exhibit higher HTHS
viscosities than competing conventional and synthetic motorcycle oils. As
seen in the graphs, 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.
EXCELLENT WET CLUTCH PERFORMANCE
Many motorcycles 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 JASO MA.
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Castrol V-Twin 20W-50 (Below)
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AMSOIL MCV (Below)
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EXCELLENT CORROSION PROTECTION
Most motorcycles 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. As seen in the photos, the
reference coupon treated with AMSOIL 20W-50 Synthetic Motorcycle Oil showed
no signs of rust and corrosion, while the competitor failed the test.
OUTSTANDING HEAT RESISTANCE
Motorcycles operate 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 break-down 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.
FOAM CONTROL
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 loaded 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.
ROBUST ADDITIVE LEVELS
Recent automotive 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 reduce wear.
AMSOIL 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 equipment life.
COST EFFECTIVE
AMSOIL Synthetic 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.
NOTE: MCF and MCV
are now available in gallon bottles.
NOTE: For HD Shovelhead engines, see SAE 60 Heavy Weight
Oil (AHR).)
Recommendations for
Harley Davidson Motorcycles
Technical Properties Chart
