Unleaded regular is the most common type of gasoline and is the least expensive. It is made up of 87 octane and is suitable for most cars.
Unleaded mid-grade is made up of 89 octane and is slightly more expensive than regular gasoline. It is a good choice for cars that require a higher octane fuel.
Unleaded premium is the most expensive type of gasoline and is made up of 91 octane or higher. It is typically recommended for high-performance cars or cars that require a higher octane fuel.
The higher the octane number, the more resistant the fuel is to knocking, which can damage your engine. However, using a higher octane fuel than your car requires will not improve its performance or gas mileage. In fact, it may actually decrease gas mileage.
In addition to the octane number, the type of gasoline you use can also affect gas mileage. For example, gasoline with a higher ethanol content may get fewer miles per gallon than gasoline without ethanol. Ethanol is an alcohol that is made from plants, and it is often added to gasoline to help reduce its environmental impact.
If you are looking to save money on gas, you can choose to use a lower octane fuel, such as regular unleaded. However, if your car requires a higher octane fuel, you will need to use it in order to avoid engine damage.
