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What does the oillife indicator on the car dashboard mean?

2 Answers

BeauLynn

07/24/25 10:06pm

oillife on the car dashboard refers to the remaining service life of the engine oil. The percentage following oillife indicates the specific value of the remaining service life. It is calculated by the vehicle's computer based on a series of reference factors such as the vehicle's usage time, mileage, and operating speed. Additional information: 1. When the oil percentage is between 20% and 15%, it is necessary to perform maintenance on the car and replace the engine oil. The oil change cycle should be determined by combining the mileage and the remaining oillife percentage. 2. Prolonged failure to change the engine oil can lead to reduced sealing effectiveness, diminished cooling performance, inadequate lubrication, and ineffective cleaning. Therefore, regular maintenance of the engine, including changing the engine oil and the oil filter, is essential to ensure the engine's proper operation.

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EllieFitz

08/10/25 2:52pm

The Oil Life displayed on the car dashboard translates to engine oil life, which is not a reminder that you're running low on oil. Modern vehicles come equipped with intelligent monitoring systems that analyze your driving habits—such as frequent short trips or highway cruising—along with data like engine operating hours and temperature to calculate the remaining lifespan of the oil. The percentage starts at 100% and decreases over time. When it drops to around 15%, it's time to plan an oil change. Remember to manually reset this data after changing the oil so it can accurately restart the countdown for the next service. I often see cases where owners forget to reset it after an oil change, leading to false alerts.

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