AMSOIL Formula 4-Stroke® 10W-40 Synthetic Scooter Oil
Unsurpassed Protection for Scooter Engines,
Transmissions and Gear Boxes
PRODUCT DESCRIPTION
AMSOIL Formula 4-Stroke® 10W-40 Synthetic
Scooter Oil (ASO) is formulated specifically to meet the special
needs of todays high-tech air- and water-cooled fourstroke
motorized scooters, offering unsurpassed wear protection and friction
reduction for longer equipment life and cooler operating temperatures.
Its exceptional shear stability ensures consistent viscosity protection
and provides additional protection for transmissions and gear
boxes, while its friction modifier-free formulation ensures wet
clutch compatibility and smooth clutch operation. A special anti-corrosion
additive package provides long-term protection during periods
of inactivity and storage.
Shear Stability
High engine rpms common to scooter applications
increase shear, causing conventional lubricants to lose viscosity
and reduce their ability to control wear, resulting in shorter
engine life. The synthetic formulation of Formula 4-Stroke Synthetic
Scooter Oil effectively resists shear, delivering consistent viscosity
protection for unsurpassed wear protection and extended equipment
life.
Thermal Stability
The operating temperatures of scooter engines
fluctuate greatly, especially with air-cooled engines. Formula
4-Stroke Synthetic Scooter Oil resists breakdown at elevated temperatures,
maintaining its protective viscosity for maximum wear control.
Transmission and Gear Box Compatibility
In many scooter applications, the engine and
transmission and/or gear box share the same oil reservoir. Formula
4-Stroke Synthetic Scooter Oil is absolutely shear stable and
will not thin out from mechanical activity, providing superior
protection for transmissions and gear boxes.
Wet Clutch Compatibility
Some scooters utilize a frictional clutch to
engage and disengage the engine from the drivetrain. In many cases,
this clutch is immersed in the same oil used in the engine and
transmission. Formula 4-Stroke Synthetic Scooter Oil contains
no friction modifiers and is wet clutch compatible, offering smooth
clutch operation and increased clutch life.
Rust and Corrosion Protection
Scooters are often subjected to extended periods
of inactivity and storage, exposing the equipment to internal
rust and corrosion. Formula 4-Stroke Synthetic Scooter Oil is
formulated with a special anti-corrosion additive package designed
to provide long-term protection during periods of inactivity and
storage.
Applications and Recommendations
AMSOIL Formula 4-Stroke Synthetic Scooter Oil
is recommended for use wherever SAE 10W-40 motor oil is specified
in air- and watercooled four-stroke motorized scooter engines,
transmissions and gear boxes that require the following:
API SG, SL/CF
JASO MA/MA2 (motorcycle wet clutch)
Engine manufacturers include, but are not limited
to, Honda, Kawasaki, Suzuki, Yamaha, Vespa, Aprilia, Piaggio,
Benelli, Vento, Kymco, Tank and TGB.
Service Life
Follow the equipment manufacturers recommended
drain intervals.
TYPICAL TECHNICAL PROPERTIES
Formula
4-Stroke® 10W-40 Synthetic Scooter Oil (ASO)
Kinematic Viscosity @ 100°C,
cSt (ASTM D-445)
14.7
Kinematic Viscosity @ 40°C,
cSt (ASTM D-445)
94.3
Viscosity Index (ASTM D-2270)
162
Pour Point °C (°F) (ASTM
D-97)
-38 (-36)
Flash Point °C (°F) (ASTM
D-92)
232 (450)
Fire Point °C (°F) (ASTM
D-92)
250 (482)
Four Ball Wear Test
(ASTM D-4172B: 40 kgf, 75°C, 1200 rpm, 1 hr), Scar, mm
0.40
Noack Volatility, % weight
loss (g/100g) (ASTM D-5800)
5.4
High Temperature/High Shear
Viscosity
(ASTM D 4683 @ 150°C, 1.0 X 106 s.-1),
cP
4.12
Total Base Number
7.4
Mixing AMSOIL
AMSOIL Formula 4-Stroke Synthetic Scooter Oil
is compatible with conventional and synthetic motor oils. Mixing
AMSOIL motor oils with other oils, however, will shorten the oil
life expectancy and reduce the performance benefits. Aftermarket
oil additives are not recommended for use with AMSOIL motor oils.
Health & Safety
This product is not expected to cause health
concerns when used for the intended application and according
to the recommendations in the Material Safety Data Sheet (MSDS).