Ballsout

This is a great idea! Here is my info...
2007 F150 Lariat, Flexfuel
5.4 Triton
4x4
64,000 miles
Screw
Bone Stock with a fiberglass campershell and 20" wheels
E85 Flexfuel (105 octane) = $3.15/gallon ($108 for 34 gallons)and I get 10.5mpg
regular 87 octane = ~$3.70/gallon and I get 15mpg

Wondertwin1

^^^dont forget to post your variables and controls. And how many times you filled up wih each.


A scientific experiment needs to have these things. Controls are what you base your entire experiment off of. Our control is 87 octane fuel. We have infinite variables. Truck types and all the bells and whistles our trucks have is one and higher octane is another. So lets keep it as scientific as possible.

Remember, the more information we have, the better the conclusion. There can NEVER be enough data.

As soon as i replace my fuel pumps ill be joining you fellas to see how my older high mileage engine handles this.

Jmfalcon1

This is the bull**** I'm talking about. This did nothing to further the experiment or the dialogue. Save this crap for someone who wants to hear it.

eclark53520

Yeah, why go out and research the science behind octane and understand what it is.

Lets have a 'scientific experiment' that has nothing scientific about it. Not only are you dealing with vastly different trucks, engines, maintenance, and driving styles, you're also dealing with vastly different climates as well as different ethanol content. Experiments are great, but you have to understand how to test for a specific variable. Lots of info is great, but if the data is crap, you're conclusions are crap(assuming you have an algorithm that would give you good concussions anyway)

Just having an average headwind or average tailwind during one tank of gas will jump numbers up or down accordingly.

Even if you did eliminate all or even most of the variables, you're testing whether the truck can take advantage of higher octane fuel by advancing timing(which we already know it can) not whether higher octane = more fuel economy.

Jmfalcon1

shut up eclark and post your crap somewhere else

eclark53520

Why u mad bro?

You can't handle the truth?



Look i can make cool colors too!

Wondertwin1

Clark seriously. We're already taking care of these variables. We are mainly trying to see if there even is an increase. To settle arguements like yours. Nobody is denying what you say is wrong, or right 100%. We just want somekind of proof that will hopefully, again, settle arguements like yours. And part of the experiment, if you read this entire thread(i doubt you did), youd see that we are posting every single variable we think of in he experiment that would change the results. I plan to do this with my old truck just to see what happens. So please, from those of us who want to see this thread work go argue in the thread i started, i will gladly argue with you there abot this.

eclark53520

I did read the entire thread.

What variables are you removing? You're not removing the human element which is the biggest one of all. You're not removing the atmospheric variables which change on a day to day, week to week, and month to month, not to mention year to year basis. Based on how full you can get your fuel tank and assuming when you fill up again you're filling it to the same point.

Again, what variables are you removing?

EDIT: I'm not trying to be a dick. But i can just see this becoming a thread that people point to and say "See, they got better mileage with high octane fuel". That's not what this thread is going to prove. This thread will prove that:

1. Modern vehicles can detect pre-det(and a lack of it) and adjust timing accordingly
2. That people will drive their vehicles differently when they want to get more mileage out of them(even if they think they're not changing driving style)

Eco F150

Why not run them on a Dyno, apples to apples, that should tell you the truth.

eclark53520

+1, plus completely remove the old gas from the fuel tank and make sure you run out all the fuel in the line before you start the next test.

That's the only way you're going to prove anything. Otherwise this entire 'experiment' is a waste of time.