| abstract |
Atraction fluid comprising a diester compound or its derivatives represented by general formula (l)n presents an ester bond of -COO- or -OOC-, n is 1 to 6, R 1 represents one or two members selected from among a hydrogen atom and C 1-8 alkyl groups, and R 2 represents one or two members selected from among C 1 _ 3 alkyl groups) is disclosed. This traction fluid is used with a power transmission, particularly a traction drive unit. |