I just got an 08 f150 Screw with tha 5.4 and I read under the hood about running ethenol. Does anyone know if these trucks can run ethenol ?

 

Should be able to run the 10% ethanol blend, or E10, with no problems. To run the 85% blend, or E85 - the engine and fuel system needs to be specifically set up for this. Not sure how Ford does it - but typically will see a Flex-Fuel logo, a yellow gas cap, or the like.

What did the label say under the hood?

The first obstacle is whether the vehicle is set up to run on E85. The next obstacle is whether one really wants to - typically will see some loss in fuel economy to balance against the lower cost of the fuel.

 

yeah took it to the gas station today and found the yeller gas cap

 

Then you can run E85. Now, as wde3477 said, whether you should or not, is totally up to you. If the E85 where you are at is considerably cheaper than gas, then go for it. You will notice a difference in mileage, its not that bad of a difference though, but it will be a little less in the least. If it's 50 cents cheaper a gallon or so, I'd be running E85. I ran a tank in my other truck a while back, and although its not "certified" to run on E85 (its not going to hurt anything on my other truck) I did see better performance.... granted I've done a lot to the truck and I'm sure the higher octane rating is why it ran better, and the mileage difference over gas wasn't much. That's my experience with E85, yours will be different. Since your truck is set up for it, why not run half a tank or so and see how it goes.

 

Ford has two versions of the 5.4L engine. One is a FFV and the other isn't. Since you have the yellow gas cap, then you should be fine. But if you want to double check, it should say 5.4L FFV on the window sticker. If you don't still have you're window sticker you can check the VIN and the engine code will also tell you.

I've been doing research on E-85 and it actually looks promising. The oil companies, government, etc won't tell you but if you have space, time, and a little desire you can get a permit so that you can legally build a still and make your own. From what I've read, the process is REAL easy (once the still is made), and just about anything such as leaves, grass clippings, etc can be used to make the stuff. The trick is to find the right materials cheap enough to be worth your time, investment, etc.

In my case, I still have a little research to do, but plan on experimenting come December or January.

 

You can easily make ethenol but it gives you much worse mpg then regular biofuels. It also carbons up your engine more. But if you use seafoam in your engine every 5k then you could benefit from this.

 

good info because with a 30 gal fuel tank it would be a lot cheaper to run E85, but i think i'll just stick with reg/prem unleaded fuel....BETTER GAS MILEAGE

 

yes I have run some e85 in my 07 King Ranch and it gets about 30% LESS mileage...so be sure to pay about 30% less for it.......HP is good but no mileage