ENGINE OIL REPLACEMENT TIME DETECTION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an engine oil replacement time detection device capable of detecting appropriate time for replacing engine oil with improved accuracy.SOLUTION: An engine oil replacement time detection device: estimates an increment of particles in engine oil during a change period on the basis of a variation of a parameter detected by parameter detection means 82 which detects the parameter related to exhaust gas flow resistance, in an exhaust passage 30, varying in accordance with an amount of the particles collected by a particle collection and treatment device 52; estimates the amount of the particles mixed in the engine oil by accumulating the estimated increment; notifies a user of time for replacing the engine oil when an estimated value becomes not less than a determination value.