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Using 100% Gasoline

10285 Views 6 Replies 3 Participants Last post by  SweetwaterMac
I just purchased a 2015 Cadenza with less than 10,000 miles. So far I'm really impressed with the car. I also have a 2002 Ford Ranger (hey, sometimes you need a truck!) which I have found runs great on 100% gas vs the 90% gas/ethanol mixture regulated by the US goobermint. The truck also gets 25% better gas mileage with the pure gas. Question is, would running 100% in my Cadenza cause any negative problems? Early mileage is around 28 as it's mostly highway but just curious if trying the 100% poses any problems. Wondering if it avoids the need for Techtron or Seafoam. Thanks for any feedback.
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Hey Gene, you can find the list here: Ethanol-free gas stations in the U.S. and Canada or specifically for you in AZ: Ethanol-free gas stations in the U.S. and Canada

Unlike running higher ethanol mixtures, running pure gasoline in your car won't hurt it at all. From what I remember most mileage tests done by manufacturers are done with pure gas and you should certainly see a difference in MPG (positive). You will also probably pay more for your gas as well. If you can find it, USE IT.

Walmart pure gas > Shell 90/10
I have the same problem Gene. Also I've noticed most of the places that carry it are either marinas or small municipal airports and are (for the most part) a higher grade than what is required.

Mac, according to the car manual they recommend that you run Techron fuel additive through your car when you change your oil. I have free oil changes for the 1st 3 years so I only end up paying $10. It's a bit more expensive than if I did it myself but I have them do it to document that it was done. Better to be safe than sorry.
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