Details
The vast majority of modern motorcycles use the same oil to lubricate the engine, transmission, and the clutch (with the exception of bikes with dry clutches, such as Ducatis, Harley-Davidsons and some BMWs). Normal, "car-derived" motor oils are designed just for engines, but were historically suitable in motorcycles. However, some of the latest American Petroleum Institute, or API specifications are claimed to be completely unsuitable for motorcycles with wet clutches, although reports of clutch slippage may be exaggerated. Representative organisations of motorcycle manufactures, particularly Japanese Automotive Standards Organization, or JASO, work with lubricants manufacturers to create "motorcycle-specific" standards for oils. The relevant oil companies then develop and test automotive oils for motorcycle use. In return, they have two different products with the same chemical content.
Read more about this topic: Motorcycle Oil
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