Good Sam Club Open Roads Forum: Tow Vehicles: Gas Mileage
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DallasSteve

Texas

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Joined: 05/28/2015

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Posted: 08/03/19 10:37am Link  |  Quote  |  Print  |  Notify Moderator

I tested a higher octane once, and I got higher MPG, but the effective cost per mile was about the same. However, the FTC says that's not true, so maybe I was mislead by the MPG numbers I was seeing on my car's computer. Anyway, I buy regular gas since that's what my owner's manual says.

Here's the FTC link:

FTC Report On Premium Gasoline





B.O. Plenty

Minnesota

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Joined: 02/04/2010

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Posted: 08/03/19 10:41am Link  |  Quote  |  Print  |  Notify Moderator

Some of the higher octane fuel in my neck of the woods is fortified with ethanol to boost the octane. In the grand scheme of things it will probably reduce the mpg.
B.O.


Former Ram/Cummins owner
2015 Silverado 3500 D/A DRW
Yup I'm a fanboy!
2016 Cedar Creek 36CKTS

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