Gas Pumps 

Unsure whether to use premium or regular gas when filling up at your local Collinsville gas station? It may seem like a simple decision, especially because regular gas often costs less than premium gas, but different vehicles have different requirements for optimal performance. Here, Auffenberg Ford O'Fallon compares premium vs. regular gas so that you can make an informed choice for your new Ford or used vehicle. Otherwise, connect with our service center for more information!

What is Premium Gasoline? 

What is premium gas, exactly? Similar to regular gasoline, the premium variety is produced from crude oil and is combustible. However, premium gasoline differs in terms of octane level, as most variants have an octane level of 90 or above. What's more, premium gasoline keeps your engine cleaner, resulting in less pollution.

What is Regular Unleaded Gasoline? 

Regular unleaded gasoline, on the other hand, has an octane rating of 87. Most Fairview Heights drivers opt for regular unleaded gasoline, as it is most common and adequate for the majority of vehicles.

 Green Gas Pump Filling Car

Difference Between Premium and Regular Gas

What is the difference between premium and regular gas? The two are fairly similar, but there are a few factors that differentiate them.

  • Octane Rating: What is the purpose of the octane rating? In short, a higher octane level reduces the likelihood of engine knocking, which damages your vehicle. As such, this occurrence is far less common with premium gasoline, due to its slightly higher octane rating.
  • Engine Suitability: Engines with lower compression ratios function better with regular unleaded gas, as it burns faster than premium gas. However, engines with higher compression ratios function better with premium gasoline.
  • Price: Of course, price is always a significant factor for Granite City drivers, and it should be taken into consideration that premium gas often costs 20 to 40 cents more per gallon than regular gasoline.

Before you decide between premium vs. regular gas, keep the following in mind:

  • Opting for premium gas when your vehicle doesn't require it won't make a difference in terms of performance or longevity.
  • Regular gas usually won't harm vehicles that require premium gas, but you shouldn't make it a habit -- and if you hear knocking when using regular unleaded gas, you should make the switch to premium.
  • Engines with turbochargers often require premium gas.

Contact the Auffenberg Ford O'Fallon Service Center Today

Contact the technicians at the Auffenberg Ford O'Fallon service center today if you have any questions on your brakes, tires, timing belt, or need more advice in deciding between premium vs. regular gas. We're happy to help you determine which type of gas is best suited for your vehicle and advise you on how to be a fuel efficient driver!