Japanese Automotive Standards Organization

The Japanese Automotive Standards Organization (日本自動車規格, Nihon Jidōsha Kikaku; JASO) is an organization that sets automotive standards in Japan, analogous to the Society of Automotive Engineers (SAE) in the United States . JASO also sets standards for grades of oil; the highest grade for two-stroke engines being JASO FD, and JASO MA for four-stroke engines (motorcycles).

JASO is part of the Society of Automotive Engineers of Japan (財団法人自動車技術会, Zaidan-hōjin Jidōsha Gijutsukai; JSAE).

• American Petroleum Institute
• Society of Automotive Engineers

• JASO standards
• JSAE (parent organization)

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