This Genuine Motor Oil 15W-40 Full Synthetic is a JASO MB 4-stroke oil built for the way scooters really run: small, air-cooled engines spinning at high RPM in stop-and-go traffic. Made in the USA, JASO MB delivers the highest lubrication ability of any 4T oil in the class, so your engine gets maximum protection whether you're commuting across town or holding full throttle on a hot summer day.
Why Oil Matters More in an Air-Cooled Scooter
Most scooter engines have no radiator or coolant. They rely on airflow and, just as importantly, on engine oil to carry heat away from the piston, cylinder, and crank. When oil thins out or breaks down from heat, wear climbs fast. A full synthetic JASO MB oil holds a stronger oil film at high temperatures, keeping air-cooled engines protected when they run hottest.
Key Features
Maximum lubrication in the 4T Oil class: Low-friction JASO MB formula with the highest lubrication ability of any 4T engine oil
Built for air-cooled engines: Full synthetic 15W-40 holds its film strength under high heat, where air-cooled engines need it most - so slick it's not suitable for use in wet-clutch engines.
JASO MB certified: Registered to JASO T903:2016 (MB), the right spec for automatic (CVT) scooters with a separate dry clutch.
Universal 4T fitment: Works in most 4-stroke scooters, from 50cc GY6 to 200cc+.
OEM recommended: Genuine Motor Oil is the brand recommended oil for Genuine scooters and motorcycles. All oils are formulated for maximum engine protection and longevity with any brand vehicle.
Made in the USA: Blended and bottled in the United States.
Technical Specifications
Part number: 1400-1087
Viscosity: 15W-40
Type: Full synthetic, 4-stroke (4T)
Certification: JASO MB (JASO T903:2016), registration M001GEN001
Volume: 1 U.S. quart (946 mL)
Country of origin: USA
Brand: Genuine Motor Oil
Compatibility
Application
Examples
Universal
Most 4-stroke automatic (CVT) scooters that call for 15W-40 oil
GY6 engines
50cc (139QMB) and 125/150cc (152QMI, 157QMJ) Chinese GY6 scooters, including Tao Tao, ZNEN and other GY6 brands
Check your owner's manual for the recommended oil spec and capacity before ordering. If your scooter calls for a 4-stroke 15W-40 oil, this oil is a strong fit.
Usage Tips
Change oil on schedule, and more often if you ride in heat, heavy traffic, or at sustained high speed, since air-cooled engines work their oil hardest in those conditions. Most 50cc to 200cc scooters take less than a quart per change, so keeping a spare bottle on the shelf makes the next service easy.
Product Diagrams
Features
Highest lubrication ability of any JASO MB-class scooter oil
Full synthetic 15W-40 protects air-cooled engines under high heat
JASO MB certified (JASO T903:2016) for CVT scooters
Universal fit for most 4-stroke scooters
OEM recommended for Genuine scooters
Made in the USA
Specifications
Part Number: 1400-1087 | Viscosity: 15W-40 | Full synthetic 4T | JASO MB (T903:2016), reg. M001GEN001 | Volume: 1 US qt (946 mL) | Origin: USA | Brand: Genuine Motor Oil
Model Fitments
Universal: most 4-stroke CVT scooters calling for JASO MB | GY6 50cc (139QMB) and 125/150cc (152QMI, 157QMJ) | Genuine Buddy, Buddy Kick, Hooligan, Rattler, Urbano, Brio | Royal Alloy GT 150 | CSC Bella Classic 50, Nitro Sport 50, Pug 50 | Kymco, SYM 4T scooters
Same day shipping for orders placed before 2PM (CST) M-F
30-day return period on eligible items
Flat-rate shipping for orders shipped to the 48 Contiguous United States.
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