| 摘要 |
A warning is issued at the time when the oil change is really needed. The system comprises first means for detecting respective values of degradation factors of oil, the degradation factors being closely related to the operation history of the motor vehicle, second means for adding the values by using a predetermined calculation formula and integrating the added result with passage of time, third means for issuing a warning signal when the integrated result exceeds a predetermined limit, and fourth means which, when oil replenishment is carried out, postpones the issue of the warning signal in accordance with the amount of the replenished oil. |
