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Fuel mileage difference using higher octane

any difference

Fuel mileage difference using higher octane

Postby red matter [OP] » Feb 26 2012, 7:23pm

Has anyone done this sort of test with higher octane?
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Re: Fuel mileage difference using higher octane

Postby lash » Feb 26 2012, 7:44pm

Using higher octane than the manufacturer calls for is in most cases is a waste of your money. Here is a decent summary of octane usage for you to read:

http://www.ftc.gov/bcp/edu/pubs/consume ... aut12.shtm

Note that there are a small percentage of vehicles that will perform better on higher octanes, but usually that has to do with the settings in your chip.

If you want better mileage, drive like it. You can go to sites that specialize in hypermiling/hypermilage, but be warned that it means you won't satisfy any urges to drive fast or fulfill your adrenaline needs.

Your best overall bet for decent mileage is to make sure that you keep your engine in the best tuneup condition and try to keep your foot out of acceleration. Truth. ;)
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Re: Fuel mileage difference using higher octane

Postby GMC'd » Feb 26 2012, 7:53pm

what lash said. When the sh@t hits the fan, it all depends on the weight of your foot.
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Re: Fuel mileage difference using higher octane

Postby MorpheusHusky » Feb 26 2012, 8:00pm

I have tried a tank of regular and a tank of supreme, a tank lasts me about a week. Same mileage both weeks at about 50% highway and 50% city. My MPG changed by .2 with the higher grade but that could of been because of another variable like temp, idle time, weather, ect. The best thing I have found that when accelrating from a stop if you keep the RPMs under 2k it will really help.
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Re: Fuel mileage difference using higher octane

Postby red matter [OP] » Feb 26 2012, 8:04pm

Well I dont believe this is the whole truth, with the ethanol they add to fuel. Non-ethanol fuel has been proven to yield better mileage. And the numbers I am getting so far with my rig this winter prove 91 octane is better gas then 87. I drive a 60/40 highway/rural to work with the cruise set on the highway at 60mph. I think this ethanol in the gas is total BS. All of them are in on it, car manufacturers, oil companies, big business. All of the go green stuff,now there is this sudden worry about ecology....one would think the automobile has been around a long time,long enough to have it all figured out on how to get 50 mpg in a truck and even higher mpg in a car. they know it can be done,will they do it...more than likely not. the rich would be a little poorer and the eco system would be cleaner LOL.

Thanks morpheus for that info, i am light on the pedal.
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Re: Fuel mileage difference using higher octane

Postby MorpheusHusky » Feb 26 2012, 8:10pm

Ya Im not sold on the ethanol in fuel either. Might make a differnece on your truck though since its newer, mines an 04. I try to stay light on the petal too but its hard when a little highschool kid wants to race there ricer :lol:

Also consider your cost per mile, is it worth another 20 cents per gallon in the long run?
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Re: Fuel mileage difference using higher octane

Postby lash » Feb 26 2012, 8:40pm

Well, there's no question that the ethenol reduces your mileage, that's just fact. It's also today's unfortunate reality.

And Morpheus is right; is the extra cost worth it to you? If you think so, then have fun and enjoy. You are not doing any damage to your truck. You also are probably not getting your money's worth for the extra octane, but it's your money and none of our concern. Drive on!
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Re: Fuel mileage difference using higher octane

Postby allterrainjoe » Feb 26 2012, 8:53pm

All those in favor of saving fuel , raise your right foot... :D
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Re: Fuel mileage difference using higher octane

Postby red matter [OP] » Feb 26 2012, 9:06pm

i agree with you all,just thought i would throw it out there. I think i need to find a new job closer to home a 1000 miles a month regardless of what octane fuel I use is a definite blow to the pocket book.
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Re: Fuel mileage difference using higher octane

Postby starspangled6.0 » Feb 26 2012, 9:19pm

Back to the original question:

I drove a lot this fall using only 91 octane, since that's what my programmer was tuning the truck for. It was a nice kick in the pants, but did nothing for fuel economy.
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