AMSOIL Formula 4-Stroke 10W-40 Synthetic Scooter Oil
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Outstanding Protection for Scooter Engines, Transmissions and Gearboxes
AMSOIL Formula 4-Stroke 10W-40 Synthetic Scooter Oil is specially designed for today's high-tech air- and water-cooled four-stroke scooters. Its multi-functional formulation maximizes wear protection and helps reduce heat while delivering smooth shifts. It addresses the unique challenges of scooter applications: high-RPM shear, extreme heat in air-cooled engines, and wet-clutch compatibility.
Key Benefits
- Multi-functional — protects engines, transmissions and gearboxes in one oil
- Shear stable — resists viscosity loss from high-RPM scooter operation
- Thermally stable — resists breakdown in air-cooled engines
- Wet-clutch compatible with no friction modifiers
- Also suitable for JASO MB applications
- Anti-corrosion additives for storage and inactivity protection
- API SP rated — highest current API specification
- Broad scooter coverage — Honda, Vespa, Yamaha, Aprilia, Piaggio and more
Shear Stable, Thermally Stable and Wet-Clutch Compatible
High engine RPM common to scooter applications increases shear, causing conventional lubricants to lose viscosity. AMSOIL Formula 4-Stroke Synthetic Scooter Oil effectively resists shear, delivering consistent viscosity protection for outstanding wear protection and long equipment life.
It resists breakdown at elevated temperatures, maintaining its protective viscosity for maximum wear control. In many scooter applications, the engine, transmission and gearbox share the same oil reservoir — Formula 4-Stroke is shear stable and resists thinning from mechanical activity, providing superior protection for transmissions and gearboxes.
It contains no friction modifiers, offering smooth clutch operation and increased clutch life. It is also formulated with a special anti-corrosion additive package for long-term protection during periods of inactivity and storage.
Technical Specifications
| Property | Value |
|---|---|
| Kinematic Viscosity @ 100°C, cSt | 14.7 |
| Kinematic Viscosity @ 40°C, cSt | 98.8 |
| Viscosity Index | 155 |
| Pour Point | -36°C (-33°F) |
| Flash Point | 240°C (464°F) |
| Fire Point | 256°C (493°F) |
| High-Temperature/High-Shear Viscosity, cP | 4.3 |
| NOACK Volatility, % weight loss | 5.6 |
| Total Base Number | 6.9 |
Industry Certifications & OEM Approvals
API
- SP, SN, SM, SL
JASO
- MA/MA2 (also suitable for MB applications)
ISO
- ISO-L-EMA2
Applications & Specifications
Use in air- and water-cooled four-stroke motorized scooter engines, transmissions and gearboxes that require SAE 10W-40 motor oil, including those made by Honda, Kawasaki, Suzuki, Yamaha, Vespa, Aprilia, Piaggio, Benelli, Vento, Kymco, Hero, Hyosung, Tank and TGB.
API SP, SN, SM, SL • JASO MA/MA2 • ISO-L-EMA2
Also suitable for use in JASO MB applications.
Follow the equipment manufacturer's recommended drain intervals.
Pros and Cons
Pros
- Multi-functional — protects engines, transmissions and gearboxes in one oil
- Shear stable — resists viscosity loss from high-RPM scooter operation
- Thermally stable — resists breakdown in air-cooled engines
- Wet-clutch compatible with no friction modifiers
- Also suitable for JASO MB applications
- Anti-corrosion additives for storage and inactivity protection
- API SP rated — highest current API specification
- Broad scooter coverage — Honda, Vespa, Yamaha, Aprilia, Piaggio and more
Cons
- Premium Investment: Higher initial cost compared to conventional or "shelf-brand" synthetic oils.
- Limited Local Retail: Primarily available through authorized dealers and specialized synthetic outlets. National Synthetics is a local stocking dealer. Call 1-678-944-8816 to confirm in-stock items for same-day local pickup.
Order Through Your Independent AMSOIL Dealer
Give your scooter the protection it deserves. As your Independent AMSOIL Dealer, we provide expert guidance and competitive pricing on all AMSOIL products.
Independent AMSOIL Dealer #1858536
Shipping & Returns
Fast, Reliable Shipping
- Free standard ground shipping on orders of $100 ($130 in Canada) or more.
- Orders under the threshold ship for a flat $9.99 ($12.99 in Canada) freight charge.
- In-stock items typically delivered in two to three business days.
- U.S. and Canada only — no shipments to PO Boxes.
30-Day Return Policy
- Return unopened, currently marketed products within 30 days for a full refund (minus freight).
- Exchange unopened products within 90 days with no restocking fee.
- Special-order items are non-returnable.
- Returns are handled directly by AMSOIL.
Frequently Asked Questions
Yes. AMSOIL Formula 4-Stroke 10W-40 Synthetic Scooter Oil is designed for use in scooters made by Vespa, Piaggio, Aprilia and many other manufacturers that require SAE 10W-40 motor oil meeting the listed specifications.
Yes. Formula 4-Stroke Synthetic Scooter Oil is wet-clutch compatible and meets JASO MA/MA2. It contains no friction modifiers, offering smooth clutch operation and increased clutch life.
Yes. In many scooter applications, the engine, transmission and gearbox share the same oil reservoir. Formula 4-Stroke Synthetic Scooter Oil is shear stable and resists thinning from mechanical activity, providing superior protection for all three areas with one oil.
Independent AMSOIL Dealer #1858536. Product information sourced from AMSOIL. Visit AMSOIL.com for the most current product details and availability.