Oil life estimation method and oil life estimation device

摘要

PROBLEM TO BE SOLVED: To provide an oil life estimation method and an oil life estimation device capable of accurately estimating an oil life of an internal combustion engine. An oil life estimation method is an oil life estimation method for estimating the life of oil in an internal combustion engine of a vehicle, and is a method of estimating the life of the first oil when replacing the first oil in the internal combustion engine with a second oil. Teacher data is generated based on deterioration measurement information, vehicle mileage information until the first oil is replaced, and deterioration factor information related to deterioration of the first oil, and the generated teacher data is used. Accumulate and estimate the life of the second oil based on the accumulated teacher data. [Selection diagram] Fig. 1