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 6-24-2009

Posted 07-06-2009 at 05:27 PM by Highwaylizard

Filled up today:

209.8 miles mostly highway
No trailer A/C all the time
30 minutes of idling with air condition running
30 miles in town
Cruise control at 75 MPH
12.494 gallons Shell87
16.7921 MPG
2.4529 MPG increase over last mixed driving

These numbers were logged while tooling around Indiana Dunes and Chesterton, Indiana. The truck spent about 30 minutes idling in various places with the air conditioner running full blast as it was very hot and humid during our stay there. I think without any in town or idling the numbers would have been up over 18 miles per gallon.

The run back to Indianapolis was done much like any other highway running I do; 75 miles per hour with the cruise control set and the air conditioner running. I still have an O2 sensor out that needs to be replaced on the passenger side manifold it is just a matter of time in getting it taken care of. Not much else to report on with this run. I am going to start tracking where I get my gas and how it relates to fuel economy as I have a theory that some stations have gas sitting around in the underground tanks for too long thereby affecting its quality.

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.

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