gas upgrades
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New User
Joined: Nov 2010
Posts: 13
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i know i changed oil and and plugs.......but this is the first time i heard that a vehicle needed specific plugs and oil. much less motorcraft....i thought my taurus ran better was i junked the motorcraft parts that came with it. im not doubting anything u fellas are saying. yall defitnely know more than i do......just saying this is quite different
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New User
Joined: Nov 2010
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wow....i didnt know that. well i'll defitnely try again with the plugs, wires, and filters. i'll come back and let you know how it goes...
Posting Guru
Joined: Jul 2007
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I heard somwhere that on the older motors if the o2 sensors go bad it will burn a lot more fuel. You might want to have the computer re-flashed by the dealer in case the old owner put some performance flash or something in it.
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New User
Joined: Nov 2010
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i'll check the sensors and get it flashed.....but i bought this truck from a company. it was a work truck its entire life. used to go back and forth from texas. All highway miles, a foreman's truck.......pretty sure there was no programmer placed on it...
Posting Guru
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I had a friend with a van with a v-10 and he was getting horrible mileage and he thought something was wrong with the engine so he sold it really cheap to anther friend of mine, and he replaced the o2 sensors and it fixed the problem. He was pissed off when he found that out. Not saying that is your problem but with the cost of fuel nowadays it might be worth the price of the sensors to find out. The dealer might be able to update the computer as well, it shouldn't cost that much.
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New User
Joined: Nov 2010
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I had a friend with a van with a v-10 and he was getting horrible mileage and he thought something was wrong with the engine so he sold it really cheap to anther friend of mine, and he replaced the o2 sensors and it fixed the problem. He was pissed off when he found that out. Not saying that is your problem but with the cost of fuel nowadays it might be worth the price of the sensors to find out. The dealer might be able to update the computer as well, it shouldn't cost that much.
Junior User
Joined: Apr 2009
Posts: 91
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From: Oklahoma
only replace the forward 02s if you decide to replace them. they're the ones that have any effect on how the motor runs. and if you know of a place around you with ethanol free gas id definitely get it next fill up. i get a lot better mileage with it. your shell station might be e-free. i think the one around here has some e-free
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Senior User
Joined: Mar 2008
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From: Maple Ridge, Canada
Your motor is set up to run 87 octane gas. Putting in higher octane is a waste of money. That may account for some of your poor mileage your engine isn't going to run efficiently if its being fed the wrong octane. Run 87 octane fuel.
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New User
Joined: Nov 2010
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well, i filled up with exxon 87 today just to see how it runs. i also bought motorcraft oil 5w30 and a motorcraft filter. gonna change the oil tommorow and check the plugs.....may swap them out for the motorcraft plugs. is there a difference in which one i buy as far as nickle plated or whatever the other one is called?
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