Vehicle Questions and Answers
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What type of fuel does a 2003 Cadillac CTS require?
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3 answers
★ Top Answer
As the proud owner of a 2003 Cadillac CTS, you might be curious about the type of fuel it needs for your daily commute. With a 3.0 liter engine, this car runs best on regular, unleaded gasoline with an octane rating of 87 or higher. This ensures smooth performance and efficiency. It's important to use the correct fuel to avoid potential damage to the engine. Rest assured that finding this fuel should be easy, as it's widely available at most service stations.
More answers
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The vehicle should be fueled exclusively with premium gas rated 91 octane or higher, as indicated in the manual and on the fuel door. Using a lower grade of fuel may result in engine knocking, noisy lifters, reduced fuel efficiency, and decreased horsepower.
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As per the owner's manual for the 2003 Cadillac CTS, it requires regular 87 octane gasoline.
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