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Old 06-25-2014, 08:17 AM   #1
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Gas premium vs regular

Is there a difference in gas mileage that would offset the difference in price if I used premium gas instead of regular when hauling my TT?
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Old 06-25-2014, 08:28 AM   #2
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Look at your owner's manual and see the fuel recommendation. Premium fuel actually burns slower and cooler than 87, so you could actually be blowing out unburned fuel in your exhaust. My TV recommendation is for 87 octane so that's what I'm using. Premium could be even worse for the environment and lower your mileage.
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Old 06-25-2014, 08:29 AM   #3
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I doubt it. I never had much of a difference running it in Mazda for highway driving so I doubt you'll probably end up paying more in the long run.


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Old 06-25-2014, 08:30 AM   #4
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Premium vs. Regular | Car Talk
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Old 06-25-2014, 12:42 PM   #5
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Unless you are using a tuner that is programmed for premium it's not worth it. I use a tuner that has a heavy tow program (over 6000 lbs). It is setup for premium gas. That's when I fill up with it. Other than that I run regular and the 87 octane tune.
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Old 06-25-2014, 12:48 PM   #6
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Quote:
Originally Posted by DF5.4 View Post
Unless you are using a tuner that is programmed for premium it's not worth it. I use a tuner that has a heavy tow program (over 6000 lbs). It is setup for premium gas. That's when I fill up with it. Other than that I run regular and the 87 octane tune.
I agree.
A good tuner can maximize mpg with high octane fuel.
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Old 06-25-2014, 02:07 PM   #7
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Correct. The engine's computer is PROGRAMMED to burn a certain octane level of fuel. Any other octane level will cost you efficiency. Therefore, a tuner is necessary. Do thorough research, though.


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Old 06-25-2014, 02:10 PM   #8
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How do you really know what you're pumping into your tanks?
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Old 06-25-2014, 02:18 PM   #9
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I thought newer vehicle were able to adjust spark timing to accommodate what they are running on? Is the computer on new vehicle what you are calling a tuner?

Get rid of the barn door you are pulling and your gas mileage will go up......drag is the enemy along with speed.....as speed increases so does drag-
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Old 06-25-2014, 02:45 PM   #10
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Originally Posted by sail2liv View Post
I thought newer vehicle were able to adjust spark timing to accommodate what they are running on? Is the computer on new vehicle what you are calling a tuner?

Get rid of the barn door you are pulling and your gas mileage will go up......drag is the enemy along with speed.....as speed increases so does drag-
They do -ish
A good tuner can maximize fuel economy better tho.
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