To provide a lubricating oil composition for continuously variable
transmission which ensures both a high coefficient of friction between
metals required for a push belt-type CTV oil and excellent oxidation
stability guaranteeing the performance over a long time.
A lubricating oil composition for continuously variable transmission is
provided, which comprises a lubricating base oil made of a mineral oil
and/or a synthetic oil formulated with a wear preventive a metal detergent
and an ashless dispersant, wherein the ashless dispersant is made of a
boron-containing succinimide having boron at a rate of one or more atoms
in one molecule of the ashless dispersant.