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What type of oil is used in a 2003 Cadillac CTS?
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★ Top Answer
The recommended oil for a Cadillac CTS 2003 is 5W-30. It's important to change your oil regularly, ideally every 5,000 to 10,000 miles. Failing to do so can lead to engine problems. Using high-quality oil is crucial for smooth engine performance. Neglecting oil changes may result in issues such as a strong burning odor, which should be checked promptly to prevent any potential danger like an explosion. Poor-quality oil can also cause the engine to malfunction, resulting in decreased gas mileage and unusual knocking sounds from the engine.
More answers
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A 2003 Cadillac CTS requires 5.1 US quarts of 5W-30 motor oil for its engine.
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