2020 年 65 巻 2 号 p. 99-104
From the aspect of effective use of resources, almost all of the quantity of used lubricating oil is recycled as fuel oil, and the recycling as lubricating oil is only a part in Japan. Here, we explain used lubricating oil recycling historically, also explain the fuel oil recycled from used lubricating oil, which is called “Reclaimed Oil”, from the characteristics and quality. Finally, we explain future issues of used lubricating oil.