um I would just add octane booster instead of putting something like that in my gas

 

they did on mythbusters and engine did run nicer

 

Mythbusters is a joke, and they are not scientists.

Why not just dump a little bit of rubbing alcohol in there while you're at it. Sure you will run nice and smooth for a while, but it won't hold up.

 

heard anything bad about doing it cuz 12 MPG sucks. even 13-14 would be amazing compared to now.

 

I dont think anything will help your gas milage seeing you have a v8 and probably like 500-600lbs of system if not more..lol

 

But yea I wouldnt be putting moth balls in my trucks gas tank.

 

Mothball - Wikipedia, the free encyclopedia

In the Mythbusters episode "Scuba Diver, Car Capers" it was shown to be "plausible" that adding mothballs to a car's fuel tank would increase its horsepower. What they did not say was that the horsepower increase lasted right up until the center of the pistons melted.

 

ive heard of adding moth balls to someones tank as revenge and mess their vehicle up. dude you have a superduty with a 5.4 your not going to get good mileage adding a tune might get a 1-2 mpg gain in economy.

 

theres plenty of shit you can do to a persons gastank to fukc em up. Im pretty sure most people go with the sand or salt method.

makes me glad i have one of the ones that has a release button :thumbsup:

 

my grand dad told me the same thing never tried it though

 

you have a wall, you don't get to complain about mileage

 

I was shocked that when I put it in there gas mileage didn't change. Maybe when I get some DC's thrown in there.

I asked cuz my once grandpa that worked at ford said he was putting it in a container and would let it disolve and then adding the fuel :dontknow:

11 MPG FTL

 

Didn't those come with the 7.3's too?

 

I believe so.

 

Why'd you go 5.4 instead of diesel?

 

moth balls will soak up with wrong octane and can cause badgas basically. act as if you have water in the tank. now if you really wanna use a octane booster that works and i've tested it at school and there is a actual diffrence Lucas performance octane booster. is your truck running bad at all though? is it thrown check engine light? or is it just bad gas mileage. you also have to remember bad gas mileage not always cause gas octane rating most time is but could also be something emission related causing it.

 

im getting 11-12 mpg like im supposed to but would like more

 

um cool? lol

 

odd spam right there

 

them moth balls will run yer oct to damn high if u dont mix it right and burn yer valves up.

i wouldnt use them gas milage in that big tank is gonna be horrid unfortunately.

 

I say don't do it.

I also say don't run octane booster.

Your engine was designed to run on 87 (regular) octane, so running higher/booster is just wasting your money. It will do absolutely bupkis for you (other than make you think you are doing something and empty your wallet faster)

Ford is stupid with their trucks IMO. They LOVE to underpower their trucks and that causes poor fuel economy.

The 4.6 should only be in rangers and cars. The 5.4 should only be in the F150. And the V10/Diesels should be in F250+.

My moms 2000 2wd Yukon with the 5.3l vortec and automatic trans got the same fuel miles as my dads 05 Silverado 2wd single cab shortbed v6 5sp.

Why? Because the bigger vehicle had a big enough motor to pull it's weight. If the 05 had the 5.3l it would get even better fuel miles.

The other day my buddy found a F350 DRW 4x4 on the internet with the 5.4L. I've driven a 5.4L F250 2wd and it was one of the most gutless things I've ever driven so I cant imagine that big ass F350.

The only way for you to get more fuel miles is to either do a diesel swap or put power adders on your engine. More power (to a point) will equal more MPG.