Many newer Cadillacs are designed to run on regular unleaded, but some older models, or those with higher-performance engines, *require* premium fuel. Using the wrong type of fuel can lead to:
* Reduced performance: The engine may not run as smoothly or produce its full power.
* Damage to the engine: In some cases, using lower-octane fuel than recommended can damage the engine over time. This is particularly true for engines designed for premium fuel.
* Check engine light: The car's computer will likely detect the use of incorrect fuel and illuminate the check engine light.
To find out what type of fuel your Cadillac requires, check:
* Your owner's manual: This is the most reliable source of information. It will specify the recommended octane rating.
* The fuel filler door: The recommended octane rating is often printed on a sticker inside the fuel filler door.
* The sticker on the engine: Some vehicles have a sticker near the engine that lists fuel requirements.
In short: Don't assume. Always check your owner's manual or the vehicle's labeling before filling up your Cadillac with gasoline. Using the wrong fuel can be costly.
