Idemitsu Kosan Company, Limited

Yasusi Aida

Hideo Kanamori

Katsumi Hashimoto

Isoo Suzuki

Kohei Nakatani

Toshiyuki Harada

A method of lubricating a metal working machine which has (i) at least one sliding machine surface requiring lubrication and (ii) a metal working section wherein metal is worked in contact with a metal working fluid, said method comprises applying a lubricating oil composition to said at least one sliding surface and using as said metal working fluid an aqueous working fluid composition comprising said lubricating oil composition diluted with water, the ratio of water to said lubricating oil composition being at least 3 to 1,

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Hiroshima, Japan

Yasusi Aida