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#1 (permalink) Old 06-20-2011, 06:05 PM
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Bad gas mileage

2011 toyota tundra 4x4 crewmax t-force. getting around 8 and 9 miles to the gallon. Its got 3000 miles. Any similarities or suggestions. thanks
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#2 (permalink) Old 06-20-2011, 07:06 PM
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Thats pretty bad even for the tundras. You probably need to drive slower. How are you calculating it?


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#3 (permalink) Old 06-20-2011, 07:43 PM
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First of all, is your truck lifted, are you running aggressive tires, where are you purchasing fuel from? If your truck is lifted and your running aggressive tires there's where most of your fuel economy loss is going to. If your running really cheap fuel that's an issue too.
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#4 (permalink) Old 06-20-2011, 07:48 PM
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I believe the Tforces come with 20s and all terrains, but there are guys running 37s that get more than 8-9 mpg.
I'm with wildbill on maybe the fuel or possibly alignment, tire pressure?


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#5 (permalink) Old 06-20-2011, 08:04 PM
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Originally Posted by rytekproject View Post
I believe the Tforces come with 20s and all terrains, but there are guys running 37s that get more than 8-9 mpg.
I'm with wildbill on maybe the fuel or possibly alignment, tire pressure?
Low profile tires are going to cause huge faults in the ride quality because there isn't enough sidewall to absorb the bumps that's what I was trying to refer too LOL. However running the stock size wheels with larger tires tends to help with absorbing bumps.

Tire pressure I don't think he would want to mess with too much having that type of tire as they tend to come unseated from the bead to easily with too little air pressure.

Bad fuel will definitely cause issues. I know some gas stations have horrible fuel and in turn will give horrible fuel economy. Ethanol fuel doesn't help any but I've only lost a couple MPG's 8-9MPG is down right horrible. I'd take the truck into the dealer and have it looked at something isn't right.
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#6 (permalink) Old 06-20-2011, 08:44 PM
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#7 (permalink) Old 06-20-2011, 09:39 PM
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i was having that type of milage with mine , and my front diff was locked up causing the front end to drag all the time .
Also switched to non ethanal fuel , still not great , averaging almost 14 mpg city/hwy and city is a shitttty 10mpg

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#8 (permalink) Old 06-20-2011, 10:52 PM
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Whats a t-force?
its the texas edition
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#9 (permalink) Old 06-20-2011, 11:04 PM
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here's the answer.... you bought a Tundra. I absolutly love my truck and would most likely buy another tundra, but I can't figure for the life of me with all the technology today, companies going green and all the eco power out there, Toyota did nothing with fuel mileage when building the new tundra. Toyota can get a scion to pump out awsome HP with some TRD add-ons while maintaining good fuel mileage but the tundra just keeps on sucking. With mine being a 4x4, level kit, larger tires I average about 10 in the city on a good day if I don't get on it. Pulling our TT we're lucky to get around 7-8 on the highway. Instead of selling this truck, I'm going to buy some fuel sipping hyundi or something to comute to work. For 4 years I have been driving this beast over 100 miles a day and with the price of gas, I'm dumping almost $180 per week. Let me know if anyone can improve the mileage

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#10 (permalink) Old 06-20-2011, 11:11 PM
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Run 91 octane and you will be alot happier. 8-9 mpg is great for an e85 rig though! I was getting 12.9 mpg with 87w10%eth. I switched to 91 and get 15-16mpg city and 18.5 - 19.5 hwy average speed 60 or so, and about 17.5 freeway cruise at or just under 70 and 15-16mpg and going down as speeds exceed 70. If you can find non ethanol fuel 91 octane 20 plus mpg should be a day in the park to achieve. Driving style affects mileage alot, a light right foot can help.

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Last edited by Trekken; 06-21-2011 at 01:03 PM.
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#11 (permalink) Old 06-20-2011, 11:21 PM
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If your towing a trailer don't exceed 65 mph, it's happier at 60. Either way I get 16 plus mpg towing a little 5,000# trailer.

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#12 (permalink) Old 06-21-2011, 12:09 AM
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there is only E-85... when you talk about 87 and 89 and 91, its all 10% ethanol, e-85 is 85% ethanol... huge difference.

i managed to get 14.2ish or so last time i calculated, i towed a lil, i do about 80 on the highway, and i have a heavy right foot and tunder gets sideways often...

so at 8-9, something is odd, unless your running e85.


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#13 (permalink) Old 06-21-2011, 12:16 AM
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Good point, either way it is crap gas. If you can locate non - eth gas you will get much better mileage. Point is Toyota tested the trucks with 91 octane non eth and the truck runs much better with it. for the added 2 -3 dollars at the pump run premium.

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#14 (permalink) Old 06-21-2011, 01:06 AM
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yea, any of the ethanol fuels pretty much bringeth the sucketh.

bio-butanol is on the way... it will be a lil better, maybe. lol


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#15 (permalink) Old 06-21-2011, 01:19 AM
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