Lubricants are an indispensable part of motorcycle engines, choosing the right oil will help the engine operate smoother and more durable. Although the lubricants for scooters and transmissions look similar, the properties of these two types are completely different.
First, it is possible to understand gear-driven cars with wet clutches and gears (with oil). Gear oil is responsible for lubricating both the engine and the clutch. If the oil has low friction and low viscosity, it will cause the clutch to slip, making the engine hot and sluggish. Therefore, the gear oil must meet the JASO MA standard of the Japan Automobile and Motorcycle Association (JASO).
Meanwhile, the scooter is a stepless transmission with a belt (no gear transmission) and a dry clutch. Scooter oil is only responsible for lubricating the engine. To promote the vehicle's performance features such as fast acceleration, maximum power, better engine cooling and reduced fuel consumption. Therefore, the oil for scooters is usually a multigrade oil with low viscosity, low friction properties and meets the JASO MB standard of the Japan Automobile and Motorcycle Association.
Due to the structural characteristics of these two types of engines, lubricating oils also have different properties and volumes. Usually with gear cars often use oil with higher viscosity and larger capacity than scooters with the same capacity.
In addition, because the working conditions of the engines of the two types are different, it is also common to use a higher level of lubricating oil for scooters than for gear cars.