Regular and Premium Fuel: What’s the Difference?

November 7th, 2017 by

One common dilemma that Muncie, IN drivers face is whether to fill up their Toyota car with regular fuel or premium gasoline. There are many myths out there about this age-old problem, and here at Toyota of Muncie, our friendly mechanics at our Toyota service center are here to dispel them and offer accurate information about when to use regular fuel and when to use premium fuel, as well as the technical differences between the two.

The first thing to do when deciding what type of gasoline to use in your car is to find out what the manufacturer recommends. To do this, take a look inside the owner’s manual or check out the sticker inside the fuel door that specifies the fuel requirements of your car. If your car requires premium fuel, it will state “Premium Unleaded Fuel Only,” with a number that indicates the minimum octane rating. Now, many cars will recommend rather than require premium fuel, but that doesn’t necessarily mean that you need premium fuel.

So what exactly is an octane rating? When you’re at the pump, you’ll see that regular fuel typically corresponds to an 87 rating, while premium fuel can range from 91 to 93. The octane rating of gasoline determines how likely it is for engine combustion to occur at the wrong time. The higher the rating, the less likely combustion is to occur at the wrong time. If your car requires premium and you use regular, it can cause your engine to “knock,” which is a mistimed explosion that can damage the engine if it occurs frequently.

Head on over to our Toyota dealership, located at 3311 N. Nebo in Muncie, IN, to browse our new inventory.

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