Top 8 Best 10w-40 Motorcycle Oil

ANTI-FRICTION FORMULATION is specially designed for the extreme temperatures and high RPMs of 4-stroke motorcycles. FULL SYNTHETIC FORMULA MAXIMIZES POWER AND ACCELERATION with advanced additives engineered to outperform. OUTSTANDING WET CLUTCH PROTECTION FOR SMOOTH SHIFTING and maximum performance. PROTECTS AGAINST HARMFUL DEPOSITS  SLUDGE that may reduce oil flow and rob your engine of power and efficiency. RESISTS RUST, CORROSION AND WEAR caused by acids and condensation. AMERICAN MADE FORMULATED to maximize your engines life and improve its performance.

1 gallon, 10W40. Genuine OEM Honda oil. HONDA set the standard for motorcycle oil when it introduced GN4 way back in 1975. specifically designed for the unique requirements of motorcycle and ATV engines..

Enhanced anti-shudder protection for smooth shifting and maximum power transfer. Developed with anti-wear technology to help improve transmission durability. Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures.

Yamalube OEM Factory 4 Stroke All Purpose Oil. Performance-Blend is Suitable for use in Motorcycles, ATVs, Side-by-Side Vehicles, and Scooters. Mineral Oil Provides Stable Clutch Performance and Strength to Protect the Engine from Wear and Tear. Oil Meets or Exceeds the JASO MA Requirements. Genuine OEM Yamaha Product.

Maxima's Premium4 is a superior product featuring advanced additive technology in the development of highly stable and long life multi-grade motorcycle specific oil. By using an exclusive blend of petroleum base stocks and advanced anti-wear, anti-shear additives, this product assures viscosity stability for all air and water-cooled 4-cycle engines with integrated transmissions. This formula also has extra anti-scuff additives to handle extreme loads and peak temperatures in high performance engines. Formulated for Wet clutches, the all weather formula reduces friction and engine temperatures and makes for easier starts. Crafted from a premium petroleum base, Premium4 is Turbo certified, exceeding all JASO-MA MC 4T and API SGCC Specs.

PERFORMANCE - Full synthetic formula with excellent film strength to resist shear and oxidation for maximum fluid life. PROTECTION Additives protect against corrosion of internal engine components and provides overall engine wear protection in high heat conditions. PEACE OF MIND - Easy starting and instant cold flow engine protection in low temperatures. HARSH CONDITIONS Optimizes clutch performance even in wet clutch applications. FITS EVERYTHING Meets or exceeds all major powersports vehicle manufacturers warranty requirements.

PRO PLUS is designed to prolong engine and wet clutch life and offers excellent feel, smoother transmission shifting, easy starts, and improved fuel economy. PRO PLUS is an ester fortified 100 percent full synthetic 4T engine oil. PRO PLUS is formulated to exceed JASO MA requirements for 4-cycle engines with integrated wet clutches. Balanced Anti-wear and Anti-scuff additive system minimizes engine deposits while protecting critical engine, transmission and clutch components. All weather formula meets or exceeds JASO MA, API SLSJSHSG.

Formulated with Trizone technology to protect all 3 critical zones engine, clutch and gearbox. Race derived technology for maximum engine acceleration. Extreme high temperature air-cooled performance and water-cooled engine performance. Excellent shear stability to prevent viscosity breakdown. Exceeds API SL and JASO MA-2.

Formulated with Trizone technology to protect all 3 critical zones engine, clutch and gearbox. Active Protection Molecules APM are a new ingredient that enhance the lubricant's ability to cling to vital engine components. Excellent engine wear protection during long trips, short commuting and stopstart conditions. Superior added protection ensures adequate lubrication before the engine reaches 51C - when most engine wear typically occurs. Exceeds API SG and JASO MA-2.

K-Tech 4-cycle oil contains a zinc additive which prevents excess wear on engine part. Protects against excessive viscosity decrease at high temperatures. Proven oil consumption control in heavy-duty servic. Contains anti-foaming and anti-shear agents.