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Regular Plus vs Premium Fuel - Which is really less expensive?

15 messages, Last post on Jul 15, 2008 at 6:01 PM
You are in the Toyota FJ Cruiser Forum. Your Hosts are steve_ & tidester
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Replying to: mwhunter1 (Mar 29, 2008 5:01 pm) No, I was suggesting that if the error bars are large enough then the the "real" difference in mileage between the two types of fuel would actually be smaller and, thereby, any savings would be somewhat exaggerated using the 2 mpg figure. We do know that even slight changes in driving behavior, road conditions, tire inflation and so on can often result in more than a 2 mpg benefit or penalty. It's difficult to get precise figures for gas mileage that take all those factors into account so the uncertainty in those figures probably matters. Nevertheless, you do raise an interesting point! tidester, host SUVs and Smart Shopper |
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| I just recently bought a 2007 FJ Cruiser and am getting only about 200 miles to the tank. I live at the top of Maine where the average speed is 50 miles an hour. I have tried both high and low octane fuel and it doesn't really seem to make a difference in how long my tank of gas lasts. That is about 10.5 miles per gallon, or 1 fill-up per week. I am just wondering if there might be something wrong with my FJ. It has 12000 miles on it and the TRD rims with BF GoodWrench T/A tires. Looking for some answers if anyone can help me out. | |
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Replying to: steve_ (Mar 29, 2008 5:52 pm) |
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Replying to: steve_ (Mar 29, 2008 5:52 pm) |
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Replying to: oy812 (Apr 01, 2008 8:20 pm) |
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Keep in mind that this vehicle has an "S" shaped fill tube which confounds most auto fill pumps in Oregon, premature click-off. A very slow fill can help this. When I top off I can add up to 3 gallons, +/- 0.5 gallons. Ambient air, temp of vehicle gas tank, how cool is the gas storage tank can all confound this. I'm not sure I've covered all the variables.
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Replying to: fhrabetin (Apr 05, 2008 10:28 am) |
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Replying to: oy812 (Apr 01, 2008 8:20 pm)
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Replying to: mnfjhunter (Jun 13, 2008 10:53 am) New to this forum. Just wanted to say I have an '07 FJ, bought in Feb of '07 - I now have almost 25,000 miles. Own a home in TN and in FL so do a lot of Interstate driving. I only use REGULAR fuel and always get over 20 mpg hwy. I just returned to FL from 3 weeks in TN and my best mpg was 24.77. My average with 5 tanks was 22.28. I keep my tires aired up, air filter is a K&N, no luggage rack, no other mods. I usually drive the posted speed. On I-75 will drive 72-73 mph., over that and mpg will drop considerably. I do not quickly take off from stops and try to be careful with accelerating into traffic. I have tried several tanks of premium and noticed no difference in my mpg. So I know you can get decent mileage per tank, but you just have to pay attention to your driving habits. And if it makes any difference, I am a 52 yr old female.
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Replying to: tnbluefj (Jul 03, 2008 11:24 am) |
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