Patent ID: 8338653
Filing Date: 2012-12-25
Classification: C10M,C10N

Abstract:
1. A lubricating oil suitable for continuously variable transmissions, comprising a base oil that comprises a synthetic oil I having the following properties: (a) a traction coefficient at 120° C. is 115% or more of that of 2,4-dicyclohexyl-2-methylpentane, (b) a viscosity at −40° C. is not more than a viscosity (260 Pa·s) of 2,4-dicyclohexyl-2-methylpentane and (c) a viscosity index is 65 or more and a synthetic oil II having a viscosity of 1 Pa·s or less at −40° C.; and the base oil has the following properties: (a′) a traction coefficient at 120° C. is 110% or more of that of 2,4-dicyclohexyl-2-methylpentane, (b′) a viscosity at −40° C. is 130 Pa·s or less and (c′) a viscosity index is 70 or more, wherein the synthetic oil I comprises at least one compound represented by formulae (II) and (III): and wherein the synthetic oil II comprises at least one compound represented by formulae (IV) to (IX): wherein R and when plural R