The thing is that where i live, we only have 91 as the highest tier. So I don't know if the win/win scenario like yours would would echo with my expy given the 91 octane.
What Grade of Gas are you using?
- Thread starter armoredsaint
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Lou Hamilton
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I seem to be averaging 13-15 mpg driving around town. I'd rather have a few dollars in my pocket than save a few cents in gas mileage.
Granted, I will most likely top off or fill-up with premium when towing my camper. Those will be over longer distances (150+miles at a time).
Much like everything else in life, this is all personal preference.
Granted, I will most likely top off or fill-up with premium when towing my camper. Those will be over longer distances (150+miles at a time).
Much like everything else in life, this is all personal preference.
Johnb21
Well-Known Member
Goodne
btw - this whole octane conversation must have the hairs on Lokiwolf's back standing straight up. I feel for you Loki...tuned my turbo race car many times over the years...not that complicated. Doesn't matter what the exact hp # the dyno says, just if it is up or down on like conditions, same dyno....and pick your fuel or tune..
I am with Loki's analysis.
goodness gracious, your mpg is horrible. My commute is 25 miles and it takes me 1hr 10m, and my mpg is waaay better, not just on the dash, old school calculator. Idling kills mileage, as well as a heavy foot....we all know that. If I idle to warm up in the Boston area each day, it impacts mpg considerably. Every car I have owned....ok, now I am talking to much common sense..
btw - this whole octane conversation must have the hairs on Lokiwolf's back standing straight up. I feel for you Loki...tuned my turbo race car many times over the years...not that complicated. Doesn't matter what the exact hp # the dyno says, just if it is up or down on like conditions, same dyno....and pick your fuel or tune..
I am with Loki's analysis.
Johnb21
Well-Known Member
Not to be annoying, but I LOVE my start stop for all you haters out there. In my commute conditions it makes a big difference in mpg...and yes I care. Not so much when on track of course.
I have no issue with Start/Stop. Idling wastes fuel, if it doesn’t have a purpose.
It was just creepy the first time I was driving an F150 and it did it. You expected it on a fuel efficient Fusion, the 150 caught me off guard.
Now, I have no issue with it.
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Lou Hamilton
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When I am around town, I usually have 1-5 mile short trips. It kills the mpg even with auto start stop activated.
When I go further, I can easily get 18-20mpg. I have not run it on any real highway trips yet. I only picked mine up on Black Friday. It still a baby with only around 1700 miles.
Johnb21
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Totally get it ....makes sense Lou.
Wayne Decker
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The real question is why doesn't this "survey" ask about 87 octane? It says less than 87 or 88-89, etc. In my area 87 is an option.
Deadman
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I run mine back and forth to work and it is only 2 miles and my lifetime average is 18.9mpg! Seems ok to me, tow package gears help on the short trips.
Lou Hamilton
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Interesting.
My lifetime mileage is 1668.8 with an avg. mpg of 14.7. All on 87 octane gas and ASS left on most of the time.
Lou Hamilton
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I took it as less than or equal to 87, which is why I chose that option.
Gumby
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So much meta trolling....keep it up boys!
The Ford Mustang GT 5.0 manual recommends 91 or higher for maximum performance. It will run with reduced performance on 87. Ford cleverly re-worded the Expedition manual. Basically, use 91 or higher for towing. In other words, it makes less power than advertised power on 87 octane.
Thanks for stating again what several of us said A LONG time ago.
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Has anyone ever seen any 'measured' and 'recorded' studies showing output comparisons between which grade you use?
YES! Posted above!
Car & Driver did an article and it included a 150 with the 2nd Gen 3.5.
Also, I have done A LOT of logging. You can watch the motor pull timing, which means less boost, and less power when running lower Octane fuel.
Even on 93 it pulls timing under extended heavy load, high ambient temps, or when the intake and everything gets heat soaked.
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