I have to laugh at all the fuel price posts. I live at the NY/NJ/PA intersection .
For regular - NY $ 4.19
NJ $3.73
PA $ 3.78
I wonder why there is no one getting gas in NY ??

 

i am laughing till i cry. its 4.37 a gallon here and thats the cheep no name market (rotten Robbie's) and thats the cheep low grade stuff. if thay (the gas co.) post record profits again i just dont know how we should go about flogging them. i work in a oil based industry and there is just no call for it to be this high in cost.

 

I consistantly received 19 mpg on the highway with cruise set at 70 mph on my '07.5 STX SCab w/4.6L (248 hp), 3" Catback, Super Chips Programmer and soft tonneau cover using Shell 87 octane. This was heading west toward TX from AR and/or north to IN. On return trips from TX and IN, I refuel at Conoco Flying J in Texarkana or in Sikeston, MO; I consistently received 21-21.1 mpg.

The same occured in my '05 Nissan Titan. I would only use Conoco when I lived in Abilene, TX. I ran Conoco in my '92 Ford Ranger, '94 Chevy C1500, '95 Ford F150 (4.9L) and '93 GMC 1500. I always try several brands of gas to find the one that gives the best mileage. I always received 1-1.5 mpg better using Conoco over Diamond Shamrock or Citgo. This was in the 90's when gas was 100%, no Ethanol added.

I always recommend friends and family try Conoco, Shell or Chevron when they mention receiving poor fuel mileage. They are usually running Sam's, Walmart, Valero or Citgo gas.

My youngest son bought a new '11 3.7L Mustang. He receives 2-2.3 mpg better fuel economy when running Conoco vs. Citgo. He lives in Snyder.

One Refinery may produce numerous brands of gas. The additive package is the key factor.

Run Valero if it work's for you. It doesn't work for me and it is usually cheaper than Shell in my area.

Enjoy your new truck.

 

I read that Exxon/Mobil returned a 49% profit increase the 1st quarter of 2011 vs. the last quarter in 2010. Imagine that.

 

Oh I am probably like the rest of people here and talk politics enough as it is, but I will be so royally pissed if those companies post more record profits again while we are stuck in a depression. Yeah and while I was stationed in southern CA a few years ago I saw real high prices, I wanted to just stay on deployment and not come back till gas and everything was back to normal but that couldn't happen, thanks IED's! (Sarcasm totally implied)
Anyways, while I am waiting for probably another month before I order my ecoboost I decided to try an ol trick on my current lifted 03 screw to get better mileage. I started driving 55mph on the highways again. Granted its like the 1970's again but with my setup and 33's I get sick of getting 12mpg. My wife has an 03 screw fx4 and she gets about 14 mph in hers driving normal so mine seems to be the hog. Has anyone tried driving 55mph in an ecoboost and see what the difference is? I'd like to know that along with the premium fuel improvements.

 

Oh and forgot to mention that with driving 55mph I have picked up roughly 1-2mpg. Forgot to add that fact.

 

Gas was always $1.00 more per gallon when I would go TDY to CA vs. prices at home in TX or MS.

 

If I fill up and drive immediately home from work, I can get the avg. comp up to 23.1 and keep it there for about 17 miles at 55-57 mph. I'm at a half a tank and the avg. comp reads 20.1. It has fluctuated from 20.1 to 20.3 mpg for the last 5 days.

 

Your calculations are way more complicated than it needs to be...

By your numbers:

Premium fuel is 8.1% more than regular fuel. ((4.00-3.70)/3.70 = .081 or 8.1%)
If fuel mileage is more than 8.1% better with premium, you are ahead. (15mpg x 8.1% = 1.2 mpg)
If less than 8.1% better, behind.

But will the mileage be better? It will be interesting to see. My guess, maybe if run hard or on a hot day, but I'd be pretty surprised to see an 8%+ increase in fuel economy.

 

Oh I know it is more complicated, I just wanted to point out the opportuinity costs of 2.11 gallons and 31.65 miles

 

Higher Octane fuel does NOT improve HP or mileage.

What higher octane fuel does is burn slower to prevent denotation. That's it.

If your car/truck/whatever can run normal timing on 87 Octane... you will gain nothing at all from higher octane fuel except for paying higher prices for it.



Ecoboost will gain Zero from higher octane.

 

For most vehicles, that is true. For the EB (and many newer Ford engines), that is false. If an engine is tuned to check for the octane level and adjust timing due to the different octane level, it is possible to get more HP and better MPG if running higher octane gasoline.

I don't know if Ford has released these numbers for the F150, but I think the SHO makes 10-15 more HP and torque on 93 vs. 87.

 

Perfect I was going to say the exact same thing. Thanks just didn't hit submit yet.

 

How many miles are on your truck? The 4WD is hurting. As is the 4.10 gears (3.55 would be best) and the 33" tires arent helping at all.

for testing purposes, OP need to keep it at the same station (preferably the same pump) and run 2-3 tanks of 87 and 2-3 tanks of 93 to get more accurate results.

 

Quote:
Originally Posted by Langford
I'm jealous...I can't get better than 13-14mpg on the highway with my ecoboost at 70mph. 4x4 crew cab, 4.10 gears on 33" MT's...so far from the best setup for mileage, but not near what I expected.





Get your whole rig recalibrated. Your truck's computer is set up for standard dia tires.. Plus the additional tire's contact patch equates to friction and those 4.10 gears ain't helping. You are getting 6.2 Raptor mileage