Lubricating oil for non-stage transmission

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 R4 and R5 each represent independently an alkyl group having 1 to 3 carbon atoms;
• k and m each represent independently an integer of 0 to 6, and n represents an integer of 0 to 2;
• and when plural R4 and R5 are present, plural R4 and R5 may be the same or different.