10W-40 Formula 4 Stroke® Synthetic Scooter Oil (ASO)
 Formula 4-Stroke Synthetic 10W-40 Scooter Oil (ASO)

Outstanding Protection for Scooter Engines, Transmissions and Gearboxes. Meets the needs of today's high-tech air and water-cooled four-stroke motorized scooters. Unsurpassed wear protection and friction reduction for longer equipment life. Protects transmissions and gear boxes. Wet-clutch compatible to insure smooth clutch operation. Provides long-term protection during storage.

Package sizes include:

Quart Bottle
Quart Bottles (case of 12)

Product Code: ASO • Brand: AMSOIL




MSDS Data Sheet

Product Details Tech Data Reviews & RatingRelated Videos

Product Applications
AMSOIL Formula 4-Stroke Synthetic Scooter Oil is recommended for use wherever SAE 10W-40 motor oil is specified in air and water-cooled four-stroke motorized scooter engines, transmissions and gearboxes that require the following:

Product Application Specs

• API SG, SL/CF
• JASO MA/MA2 (motorcycle wet clutch)
• ISO-L-EMA2

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 manufacturer's recommended drain intervals.

Product Description
AMSOIL Formula 4-Stroke 10W-40 Synthetic Scooter Oil is formulated specifically to meet the special needs of today’s high-tech air and water-cooled four-stroke motorized scooters, offering outstanding wear protection and friction reduction for longer equipment life and cooler operating temperatures. Its exceptional shear stability provides consistent viscosity protection and additional protection for transmissions and gearboxes, 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 rpm common to scooter applications increases 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 outstanding 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.

Service Life
Follow the equipment manufacturer's recommended drain intervals.

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).

Click here to view the MSDS Data Sheet for AMSOIL ASO.

Keep out of the reach of children. Don't pollute. Return used oil to collection centers.

TYPICAL TECHNICAL PROPERTIES
  Formula 4-Stroke® 10W-40 Synthetic Scooter Oil (ASO)
Kinematic Viscosity @ 100°C, cSt (ASTM D-445)14.8
Kinematic Viscosity @ 40°C, cSt (ASTM D-445)98.9
Viscosity Index (ASTM D-2270)156
Pour Point °C (°F) (ASTM D-97)-38 (-36)
Flash Point °C (°F) (ASTM D-92)230 (446)
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) 5.8
High Temperature/High Shear Viscosity
(ASTM D-4683 @ 150°C, 1.0 X 106 s.-1), cP
4.1
Total Base Number7.4

Tips to Effectively Winterize Gasoline Powered Vehicles & Equipment

Also use AMSOIL Gasoline Stabilizer, in addition to fresh Oil & Filter

Did this product meet your expectations?

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Product Name: 10W-40 Formula 4 Stroke® Synthetic Scooter Oil (ASO)
Current Rating: 4.67 out of 5 stars
Total Votes: 3 vote(s)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jean-Michel: space

Amsoil oils review

I have used Amsoil oils for the last 15years on all my toys. Never had a problem. These oils are prime quality at a reasonable price.
You can't go wrong using them!

Item Reviewed: 10W-40 Formula 4 Stroke® Synthetic Scooter Oil (ASO)
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