5 Recommended Engine Oils for Off-Road Motorcycles!

オフロードバイクにおすすめのエンジンオイル5選!
Many of you are probably thinking of changing your engine oil depending on the season, the year of your bike, and its intended use.
However, with so many brands and price ranges flooding retailers and online stores these days, it can be hard to make a decision.
To help you with this dilemma, we will introduce basic oil selection methods and five recommended oils, especially for off-road motorcycles.
How to choose the best oil for off-road motorcycles
  • [1. Choosing by base oil]
    Mineral oil
    Synthetic oil
    Semi-synthetic oil
  • [2. Choosing by viscosity]
    Single-grade
    Multi-grade
  • [3. Choosing by grade]
    API standard
    JASO standard
  • [4. 5 Recommended Off-Road Motorcycle Oils by Brand!]
    MOTOREX "CROSS POWER 4T"
    Castrol "POWER 1 RACING 4T"
    MOTUL "300V Square Factory Line"
    MAXIMA "530MX"
    WAKO'S "TRIPLE R"
  • [5. Summary]

[1. Choosing by base oil]

Mineral oil

Mineral oil is a popular base oil made from crude oil. While mineral oil is inexpensive and readily available, its performance may be inferior to other engine oils.
However, it can be used without problems as an engine oil by changing it periodically.

Synthetic oil

Synthetic oils are also made from crude oil, just like the mineral oils mentioned above.
However, there is a difference in the manufacturing process compared to mineral oils. These oils are synthesized after thoroughly removing impurities from crude oil, resulting in high-performance oils with excellent heat resistance and lubricity. However, they are usually more expensive.

Semi-synthetic oil

Semi-synthetic oil is an oil made by blending mineral oil and synthetic oil. Therefore, it offers a good balance between price and performance, and can be said to be an oil that combines the strengths of both mineral oil and synthetic oil.

[2. Choosing by viscosity]

Single-grade

Single-grade oils are those with only one number indicating oil viscosity, such as "50SAE." This indicates the oil viscosity at an oil temperature of 100°C.
Although this is a somewhat older standard, it is still favored by owners of older motorcycles with larger engine clearances.

Multi-grade

Multi-grade oils are those with two numbers indicated, such as "10W-30" or "5W-30."
The "W" in the display stands for "Winter," and the left number represents the viscosity at low temperatures, while the right number represents the viscosity at high temperatures.

[3. Choosing by grade]

API standard

In addition to the base oil types and viscosities explained so far, engine oils also have "grades" indicated.
Among them, the "API standard" is set by the American Petroleum Institute, and it classifies engine oil performance, such as heat resistance and wear resistance, into 12 stages, starting from "SA" and going up to "SN."

JASO standard

On the other hand, the "JASO standard" is an oil standard set by the Japan Automobile Standards Organization. The "API standard" cannot test all the performance required for motorcycle engine oils.
Therefore, the "JASO standard" sets different criteria for cars and motorcycles, and further differentiates between 2-stroke and 4-stroke motorcycle oils.
This standard is not an indicator of performance, but rather shows the characteristics of the oil, and in some cases, it may be specified for certain motorcycles.

[4. 5 Recommended Off-Road Motorcycle Oils by Brand!]

MOTOREX "CROSS POWER 4T"

MOTOREX's "CROSS POWER 4T" is an oil developed in collaboration with many motocross racing teams, including "KTM."
It is touted as the best match for 4-stroke off-road vehicles, suppressing power loss due to low friction resistance, and demonstrating stable performance over a wide temperature range.
In addition, it is an affordable product with a wide range of viscosities.

Castrol "POWER 1 RACING 4T"

Castrol is a top brand in the oil industry. Their "POWER 1 RACING 4T" is an engine oil developed from Castrol's racing expertise, achieving a high level of both acceleration performance and engine protection.
It is particularly suitable for high-performance 4-stroke motorcycles with small to medium displacements.

MOTUL "300V Square Factory Line"

MOTUL's "300V Square Factory Line" is a 100% pure synthetic oil for 4-stroke engines that can be used not only for off-road but also for on-road.
It achieves low friction with an optimal oil film during low-speed driving, which can lead to increased torque. In addition, it improves clutch grip and enhances athletic performance.
It is characterized by forming a thin, hard oil film, and is said to be compatible with modern liquid-cooled engines with narrow engine clearances.

"530MX"

 

MAXIMA brand off-road oils, designed to minimize clutch slip, are developed with an emphasis on torque increase rather than maximum power output.
Among them, "530MX" is an oil developed in collaboration with team "PROCIRCUIT KAWASAKI." It uses the highest quality base oil with excellent sealing, oil film strength, and lubricating performance.
This is a motocross-specific racing oil that pursues torque increase through excellent clutch traction.

WAKO'S "TRIPLE R"

WAKO'S "TRIPLE R" is a 4-cycle engine oil developed using "3D Technology," a new generation base oil technology.
It maintains excellent responsiveness at both low and high speeds while demonstrating high heat sag resistance. It also supports a wide range of engine types, from air-cooled to liquid-cooled engines.

[5. Summary]

Regardless of whether it's for off-road or not, the key to choosing engine oil for your motorcycle is to select the right product based on your application, purpose, and suitability. By comprehensively considering the brand, price range, and base oil, you should be able to find the perfect oil.
The off-road motorcycle oils introduced here are just a small selection. Why not compare various oils and find your favorite brand?
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