Wondering what the numbers on gasoline really mean? They are measures of fuel stability that indicate the grade, or quality, of particular gasoline. Higher grade, or premium gas (usually 91-94 octane), is superior to regular gasoline (usually 87 octane). All fuels used in modern vehicles found on the roads of Kaukauna and Neenah are now unleaded. Want to learn more? Read on! Otherwise, feel free to contact our service department for additional information!

What is Regular Unleaded Gasoline? 

Regular unleaded gasoline, or as it's more commonly known around Green Bay, regular gas, is the most common type of fuel used in new CDJR vehicles. But some models may require or benefit from using higher-grade gasoline. 

Always consult your owner's manual for detailed information on what grade of gasoline your Chrysler, Jeep, Dodge, or RAM vehicle requires! Regular unleaded gas has been used for many years now in place of leaded gas as it is much better for the environment and people's health. Some classic and vintage cars you'll notice cruising on Oshkosh and Manitowoc roads, however, require a lead substitute additive in addition to regular gas to function properly.

What is Premium Gasoline, Anyway? 

Premium gas and regular gas share many qualities. Both are made from crude oil. Both are combustible. But they vary in octane level -- a measure of resistance to inappropriate combustion. Most premium gasoline will have an octane level that is 91 or above. Premium gasoline helps keep your engine cleaner, which leads to less pollution. There's also mid-range gas, which usually has an octane between 89.

The Difference Between Premium and Regular Gasoline

Three main factors set apart grades of gasoline from each other, including: 

  • Engine Suitability: Regular gasoline burns more quickly than premium gasoline, making it better-suited for engines with lower compression ratios. Engines with higher compression ratios, which are commonly found in luxury or sports cars, however, will usually benefit from -- or often, require -- premium gasoline. 
  • Price: Premium gas can be as much as 20 to 40 cents more per gallon than regular unleaded gas.
  • Octane Rating: Higher octane levels reduce the chance of engine knocking, which can damage your vehicle. Also known as pre-ignition, engine knocking is best-avoided.

Before deciding on whether or not premium vs. regular gas is the best choice to fuel your Waupaca travels, remember the following:

  • Does your owner's manual recommend regular gas? There's no sense to spend extra on premium gas. It won't increase your engine's longevity or make your vehicle perform better, contrary to popular belief. 
  • If your vehicle requires premium gas, using regular gas typically will not harm the vehicle substantially. That said, we recommend using whichever grade of gas your owner's manual mandates/suggests. If you take a chance and use regular gas in a vehicle that's supposed to have premium gas and then hear knocking when you use regular gas, it's time to switch to premium gas. 
  • You may have to use premium gas in vehicles that have turbochargers. 

Learn More: Contact Our Service Center Today!

Still have additional questions about the difference between premium and regular gas? Need more service tips or answers to your service questions? We're here to help! Give us a call for further assistance. Otherwise, feel free to schedule a service appointment now!