Best 10w40 Synthetic Motorcycle Oil

Peter | 13-10-2025

In this article, we will explore the Best 10w40 Synthetic Motorcycle Oil that are now on the market. In addition to that, we have provided you with a detailed guide that will assist you in choosing the right product. We really hope that by looking through the reviews of the top Best 10w40 Synthetic Motorcycle Oil products that we’ve provided below, you’ll be able to quickly narrow your choices and select the one that best satisfies your needs.

We have spent lots of time testing. According to our research, we think Valvoline Best 10w40 Synthetic Motorcycle Oil is the best overall. For more of our top picks, read on! Also, check out our buying guide for some tips on how to choose the right Best 10w40 Synthetic Motorcycle Oil.

Editor's Choice
TRIAX XTerra 4T 10W-40 - Full Synthetic Oil, 4-Stroke - Motorcycles, ATVs, Snowmobiles and Quads -
TRIAX XTerra 4T 10W-40 - Full Synthetic Oil, 4-Stroke - Motorcycles, ATVs, Snowmobiles and Quads -
Premium Pick
Liqui Moly 4T 10w-40 Street 4-Liter
Liqui Moly 4T 10w-40 Street 4-Liter
Budget Pick
Lucas Oil 10793 Synthetic SAE 10W-40 Motorcycle Oil Ma2, 32. Fluidounces, 1 Quart, 1 Pack
Lucas Oil 10793 Synthetic SAE 10W-40 Motorcycle Oil Ma2, 32. Fluidounces, 1 Quart, 1 Pack

Top 10 Best 10w40 Synthetic Motorcycle Oil

We researched and compared the top products in the Best 10w40 Synthetic Motorcycle Oil category to provide you with these recommendations.

1. Valvoline 4-Stroke Motorcycle Full Synthetic SAE 10W-40 Motor Oil 1 QT

Valvoline 4-Stroke Motorcycle Full Synthetic SAE 10W-40 Motor Oil 1 QT
8.7

Valvoline

Check Price On Amazon
  • Full Synthetic Formula Helps Maximize Power And Acceleration
  • Formulated To Provide Outstanding Wet Clutch Protection For Maximum Power Transfer And Smooth Shifting
  • Added Protection Against Harmful Deposits That Can Decrease Engine Performance
  • Excellent Wear And Corrosion Protection To Help Keep The Engine Performing Its Best

2. TRIAX XTerra 4T 10W-40 - Full Synthetic Oil, 4-Stroke - Motorcycles, ATVs, Snowmobiles and Quads -

  • No Compromise: State-of-the-art formulation built for performance with a synthetic ester core, built-in friction modifiers, and outstanding viscosity stability under high thermal stress and high RPMs, providing superior clutch engagement and shift stability
  • Fully Compatible with all Major OEMs: Honda, Kawasaki, Yamaha, Bombardier, Arctic Cat, Can-Am, Polaris, Argo, Linhai, Suzuki, and many others
  • Complete Compliance: Exceeds JASO MA-2 for motorcycle engines and wet clutch integrated transmission, as well as API SL / SN
  • High Oxidation Stability: Built with 100% synthetic Ester core, it provides outstanding oil thickening, high-temperature sludge, and varnish deposits; Shear stable high VI index improvers protect against viscosity breakdown in severe service and racing conditions
  • High Wear Protection: Friction modifiers designed to protect cam lobes and other highly loaded parts from wear, including chains and clutches; Excellent performance and high wear protection in high-temperature engines
  • Fast Gear Changes: Exceptional shift quality, fast, smooth gear changes, and outstanding clutch engagement and frictional optimization
  • Universal Formulation: Fits a wide range of small 4T engines: motorcycles, scooters, off-road dirt bikes, etc; Meets and exceeds all Japanese OEM warranty requirements

3. Liqui Moly 4T 10w-40 Street 4-Liter

Liqui Moly 4T 10w-40 Street 4-Liter
9.1

Liqui Moly

Check Price On Amazon
  • High-performance motor oil based on synthetic technology
  • Ensures maximum performance and protection of the engine under all operating conditions
  • Optimum lubrication, outstanding engine cleanliness, excellent friction and minimal wear
  • Developed for air- and water-cooled 4-stroke engines exposed to normal to extreme operating conditions
  • Suitable for engines with or without a wet clutch

4. Lucas Oil 10793 Synthetic SAE 10W-40 Motorcycle Oil Ma2, 32. Fluidounces, 1 Quart, 1 Pack

Lucas Oil 10793 Synthetic SAE 10W-40 Motorcycle Oil Ma2, 32. Fluidounces, 1 Quart, 1 Pack
8.9

Lucas Oil

Check Price On Amazon
  • Package Dimensions: 22.352 cms (L) x 10.921 cms (W) x 6.096 cms (H)
  • Product Type: Auto Accessory
  • Package Quantity: 1
  • Country Of Origin: United States

5. Castrol Power1 4T 10W-40 Full Synthetic Motorcycle Oil, 1 Quart, Pack of 6

Castrol Power1 4T 10W-40 Full Synthetic Motorcycle Oil, 1 Quart, Pack of 6
8.7

Castrol

Check Price On Amazon
  • 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

6. Quicksilver 10W-40 4-Stroke Full Synthetic Motorcycle Oil, 1 Gallon

Quicksilver 10W-40 4-Stroke Full Synthetic Motorcycle Oil, 1 Gallon
8.5

Quicksilver

Check Price On Amazon
  • Full synthetic formula with excellent film strength to resist shear and oxidation for maximum fluid life
  • Additives protect against corrosion of internal engine components and provides overall engine wear protection in high heat conditions
  • Easy starting and instant cold flow engine protection in low temperatures
  • Meets or exceeds all major powersports vehicle manufacturers warranty requirements

7. Lucas Oil Motor Oil, High Performance, 10W40, Semi-Synthetic, 1 qt Bottle, Motorcycle, Each

Lucas Oil Motor Oil, High Performance, 10W40, Semi-Synthetic, 1 qt Bottle, Motorcycle, Each
8.3

Lucas Oil

Check Price On Amazon
  • Package Dimensions: 4.5 L x 9.5 H x 2 W (inches)
  • Country of Origin : United States
  • Part number: 10710

8. K&N Full Syntheteic Motorcylce/ATV Oil: 10W-40 Synthetic Oil: Premium Engine Protection, 1 qt

  • Full Synthetic formula - ideal for use with K&N premium oil filters
  • Provides superior engine protection and improved wet clutch performance
  • Designed to perform in extreme conditions including extreme high and low temperatures and high operating R.P.M.
  • Helps optimize transmission performance for smooth operation
  • Made in USA

9. Motul 7100 4T 10W-40 Synthetic Oil 4 Liters (104092)

  • 100% SYNTHETIC ESTER TECHNOLOGY: Offers superior protection and performance through its advanced ester-based formulation, enhancing lubricity and natural cleaning properties.
  • ENHANCED ENGINE PERFORMANCE: Provides optimal performance and protection under high temperatures and rigorous use, perfect for high-performance motorcycles.
  • ROBUST SHEAR RESISTANCE: Maintains consistent viscosity and film strength under severe mechanical stress, ensuring dependable engine protection.
  • COMPATIBLE WITH MODERN ENGINES: Suitable for the latest engine technologies, including those with catalytic converters; meets stringent emissions standards.
  • VERSATILE USE: Ideal for a wide variety of motorcycles, supporting high-performance engines, integrated gearboxes, and wet clutch systems.
  • MEETS JASO MA2 AND API SN STANDARDS: Complies with rigorous JASO MA2 requirements for optimal wet clutch performance and API SN standards for broad engine compatibility.

10. Valvoline 4-Stroke ATV/UTV SAE 10W-40 Motor Oil 1 QT, Case of 6

Valvoline 4-Stroke ATV/UTV SAE 10W-40 Motor Oil 1 QT, Case of 6
8.3

Valvoline

Check Price On Amazon
  • Superior engine protection in the extreme operating environments of ATVs and UTVs
  • Formulated to protect the wet clutch system and maximize power transfer
  • A blend of cleaning agents and dispersants help prevent formation and keep engines clean
  • Shear stable viscosity improvers help resist oil film breakdown

Peter

Related Posts