<ul><li>Oil life indicators in modern cars are accurate and calculate remaining oil life based on various factors beyond just mileage.</li><li>The algorithm behind these indicators was developed by General Motors engineers in the 1980s, taking into account engine cycles, injector activations, water temperature, and oxidation.</li><li>The system advises oil changes before the oil is completely degraded and recommends changing oil at least once a year, irrespective of mileage.</li><li>Real-world tests have shown that these oil life monitoring systems are somewhat conservative, indicating oil changes as a precaution rather than waiting for oil to be completely worn out.</li></ul>

Those Oil Life Indicators Are Way More Accurate Than You Think

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