This blog is about my search for better fuel economy for my truck. I have a 2004 Toyota Tundra Double cab with a V8 engine, four wheel drive, and a four speed automatic transmission. Of all the years the Tundra has been available it appears that the 2004 DC truck, because of its size and engine/transmission configuration, gets the worst mileage of all the Tundras. The Gross Vehicle Weight of the truck is 6600 pounds and the EPA fuel economy rating for the truck is 14 mpg in the city and 17 mpg on the freeway. In all honesty these fuel economy figures are both generous and unrealistic.

I have a personal Blog with more detailed information about my testing and my findings. Detailed spreadsheets of my fuel economy and test conditions can be emailed from my email account at highwaylizard@gmail.com

Please feel free to subscribe to my blog here on this forum through the RSS feed or my personal Blog.

Thanks for looking and ask any questions you may have.

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MPG Numbers 6-30-2009

Posted 07-08-2009 at 11:21 PM by Highwaylizard

Filled up today:

208.4 miles mixed driving
Air conditioner the whole time
12.449 gallons Shell87
16.7403 MPG.8973 MPG decrease
over last mixed driving and A/C

These numbers are pretty darn good. The good fuel economy seems to have become par for the course – not that I am complaining. Considering that these numbers are the result of mixed driving with some trailer miles the MPG numbers are quite excellent.

I attribute the good fuel economy to the Fitch, the better exhaust (which will completed with a set of headers and a y-pipe) the True Flow intake with the True Flow foam filter, the self-designed ram air intake scoop, and the probably arrival of summer grade fuel in my region.

As always, if you have any questions please do not hesitate to email us. For more information about my testing or to see pictures take a look at my personal blog at Tundra Fuel Economy. Feel free to drop in, look around, and drop some comments or ask questions.

Comments 2

Total Comments 2

Comments

Have you considered Halo spark plugs? I installed a set a year or so ago and immediately got a 2-3 mpg improvement. I routinely get right at 20 mpg on the freeway IF I avoid the passing gear, hold my speed to 60 or below, have no headwinds, and in general drive like an old lady.

I have a 2006 Tundra 4.7L 4x4 with TRD offroad pkg, plus a camper shell -- the kind that extends about a foot above the height of the cab.

I have occasionally gotten 21 & 22 mpg, but those cases were ideal -- flat road, steady speed. Probably outliers and shouldn't be counted. But I drive regularly between Orange County, CA and eastern San Diego County, and I can always get 19-20 mpg.

I'd like to get a hydrogen fuel injection system, but there's still some controversy about it. An outfit called Hydroforce in Glendale, AZ, with a few affiliates in AZ & NM, produces & installs one that sounds pretty good. They quoted around $450.

Argus Okie

Posted 07-15-2009 at 08:26 PM by Argus Okie Argus Okie is offline

hi , i have 05 sr5 4 door 4x4 4.7lt , its an Americian truck
i swear when i bought it it was getting about 480 miles to the tank after this winter and the past 6 months i ve watch it godown to 300 and lower, i have to drive like a granny to get her over 300, it seem s to be gutless as well , still stong but just doesn't have the pep, plz help ,cause the guy up here don't know to much about American tundras the techs at toyota . what should i start to look at change starting from cheepest and so on thanks

Posted 10-29-2009 at 11:02 PM by tundramark tundramark is offline

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