question about fuel grade

with gas currently around $6 a gallon for 87 octane, that's what I'm running. if it ever gets back to reasonable prices like $4 a gallon for 91, I'll do that... but until then ... 87 it is. right now, I'm happy if it's $100 or less to fill my tank. Tomorrow will be my 3rd fill up this week.

Calgecko

… if it ever gets back to reasonable prices like $4 a gallon for 91….

ha. that’s a good one. 😂😁

Why stop at $4? the $1.04 per gallon i recall paying not all that long ago was very reasonable. Of course, even then I’d tell the clerk, ‘uuh, let me get 7 dollars and 54 cents on pump 3, thanks.” I guess some things don’t change.

Like others have said, I think MPG has more to do with driving style than octane, but that being said, I intend to only use 89 or 91 in my Bronco. I've had to put 91 in my last three cars so I'm already used to it.

GeoBig
Like others have said, I think MPG has more to do with driving style than octane, but that being said, I intend to only use 89 or 91 in my Bronco. I've had to put 91 in my last three cars so I'm already used to it.

I agree with Geo and we gas up our Bronco with 89 octane.
Drive smooth & steady and get decent MPG. No problem.

We owned Jaguars & Land Rovers for many years and always had to fill up with 91 premium (the high price per gallon sucked).

BaBump

ha. that’s a good one. 😂😁

Why stop at $4? the $1.04 per gallon i recall paying not all that long ago was very reasonable. Of course, even then I’d tell the clerk, ‘uuh, let me get 7 dollars and 54 cents on pump 3, thanks.” I guess some things don’t change.

That would require a Time Machine. I don’t think we’ve had gas prices that started with a “1” sine the 80’s.

Calgecko

That would require a Time Machine. I don’t think we’ve had gas prices that started with a “1” sine the 80’s.

i was paying 1.99 at the end of trumps term

Cornwelltoolman

i was paying 1.99 at the end of trumps term

Where and for what?

BaBump

Where and for what?

Utah for regular unleaded witch at our altitude is 85 you don't need as much octane at higher elevations

Cornwelltoolman

i was paying 1.99 at the end of trumps term

First, don't mention politicians' names at the other site--they'll ban you. I made a wisecrack about a certain prominent Socialist, and they banned me for 30 days (expiring tomorrow), with a warning that a repeat would result in a permanent ban.
OTOH, there are facts, and this government-sourced chart, summarizing all yearly gas prices with all retail octanes, tells you what happened when the goal was to drill and frack, and achieve energy independence.

https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=pet&s=emm_epm0_pte_nus_dpg&f=m

ChetC

Here's a link to a post I made where I did a (somewhat) extensive test between 93 and 87 octane in my 2.3L, manual transmission Big Bend.

https://thebronconation.com/general...ane-in-2-3l-with-manual-transmission-t.12759/

I should add that since that test, I've switched back to 91/93 octane when towing as I thought I was hearing a little detonation on 87 when I pulled my camper across the Rockies. I never noticed this in the Appalachians so I'm willing to bet that altitude and its lack of O2 was the culprit.

Thanks for the analysis. Its good to be able to have some idea of numbers, prices for the various grades can change quite a bit where I live, so it sometimes makes more sense to buy one or the other.

BostonBadlands

First, don't mention politicians' names at the other site--they'll ban you. I made a wisecrack about a certain prominent Socialist, and they banned me for 30 days (expiring tomorrow), with a warning that a repeat would result in a permanent ban.
OTOH, there are facts, and this government-sourced chart, summarizing all yearly gas prices with all retail octanes, tells you what happened when the goal was to drill and frack, and achieve energy independence.

https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=pet&s=emm_epm0_pte_nus_dpg&f=m

intereting chart thanks for sharing
I don't ues the other site my mentioning Trump was not to be a political just a frame of reference 😉

BostonBadlands

First, don't mention politicians' names at the other site--they'll ban you. I made a wisecrack about a certain prominent Socialist, and they banned me for 30 days (expiring tomorrow), with a warning that a repeat would result in a permanent ban.
OTOH, there are facts, and this government-sourced chart, summarizing all yearly gas prices with all retail octanes, tells you what happened when the goal was to drill and frack, and achieve energy independence.

https://www.eia.gov/dnav/pet/hist/LeafHandler.ashx?n=pet&s=emm_epm0_pte_nus_dpg&f=m

Good intel. I like numbers! Feels like I missed that sub $2 dip!

Nminus1

Octane does not affect MPG. It can up the HP, (as Ford has mentioned) if you drove your truck hard enough that the computer had to adjust timing/tuning downwards to stop detonation due to 87 octane. As people have previously mentioned, you can get a larger increase of power from running premium than most exhaust/muffler upgrades which may make it sound better but rarely increase much power at all, if any. Check dyno results of after market exhaust systems if you don't believe me. So compare paying for premium gas vs. a $700-1000 over the lifetime of your truck if you want to run the numbers. BTW I like aftermarket exhausts and have bought them for most of my vehicles over the last 40 years, not dissing exhausts

I don’t think you want to paint mileage gain denial running higher octane gas with a broad brush. Read this Car and Driver test done on the 3.5 EcoBoost. Yes it was only 3.5% greater with 93 octane but it DID increase it. Could happen with a Bronco. I agree that higher octane is the way to go.

Ford F-150
MARC URBANO|CAR AND DRIVER
At 128.7 horsepower per liter, the F-150's high-output V-6 engine is more power dense than a Porsche 911 Carrera's twin-turbo flat-six. Naturally then, the Ford hauls ass as effortlessly as it hauls a half-ton of manure. When fed 93 octane, this 5594-pound, self-propelled wheelbarrow will crash 60 mph in 5.3 seconds.

Power at the wheels dropped from 380 to 360 horsepower with the change from 93 to 87 octane. That difference seemed to grow, and we could even feel it from the driver's seat at the test track. Compared with premium fuel, regular feed sapped the F-150's urgency both leaving the line and in the meat of the tach sweep. The rush to 60 mph softened to a still-blistering 5.9 seconds, and the quarter-mile stretched from 14.0 to 14.5 seconds, with trap speed falling 4 mph. Tapped into the Ford's CAN bus, we recorded a peak boost pressure roughly 1.9 psi lower during acceleration runs on regular gas, down more than 10 percent compared with the 18.1-psi peak on premium. The high-octane gas also helped when soft-pedaling the accelerator, elevating 75-mph fuel economy from 17.0 to 17.6 mpg. That won't make a financial case for running 93 octane, but then you didn't buy the expensive engine as a rational choice. You can think of this EcoBoost engine's more aggressive high-octane tune as a sort-of sport mode that can be switched on or off with every fill of its 36.0-gallon tank.

extra toasty

I don’t think you want to paint mileage gain denial running higher octane gas with a broad brush. Read this Car and Driver test done on the 3.5 EcoBoost. Yes it was only 3.5% greater with 93 octane but it DID increase it. Could happen with a Bronco. I agree that higher octane is the way to go.

Ford F-150
MARC URBANO|CAR AND DRIVER
At 128.7 horsepower per liter, the F-150's high-output V-6 engine is more power dense than a Porsche 911 Carrera's twin-turbo flat-six. Naturally then, the Ford hauls ass as effortlessly as it hauls a half-ton of manure. When fed 93 octane, this 5594-pound, self-propelled wheelbarrow will crash 60 mph in 5.3 seconds.

Power at the wheels dropped from 380 to 360 horsepower with the change from 93 to 87 octane. That difference seemed to grow, and we could even feel it from the driver's seat at the test track. Compared with premium fuel, regular feed sapped the F-150's urgency both leaving the line and in the meat of the tach sweep. The rush to 60 mph softened to a still-blistering 5.9 seconds, and the quarter-mile stretched from 14.0 to 14.5 seconds, with trap speed falling 4 mph. Tapped into the Ford's CAN bus, we recorded a peak boost pressure roughly 1.9 psi lower during acceleration runs on regular gas, down more than 10 percent compared with the 18.1-psi peak on premium. The high-octane gas also helped when soft-pedaling the accelerator, elevating 75-mph fuel economy from 17.0 to 17.6 mpg. That won't make a financial case for running 93 octane, but then you didn't buy the expensive engine as a rational choice. You can think of this EcoBoost engine's more aggressive high-octane tune as a sort-of sport mode that can be switched on or off with every fill of its 36.0-gallon tank.

You have to consider the source, 6g does not have much credibility when they censor the truth and ban those who present facts.

Bronco V-8

You have to consider the source, 6g does not have much credibility when they censor the truth and ban those who present facts.

Sorry but to don’t know what your trying to say.

extra toasty

Sorry but to don’t know what your trying to say.

The poster you were replying to, cited 6g as a source of facts but Car and Driver got it right.I was trying to explain his position.

Just a comment on 85 octane gasoline. Here is what the manual says.
Your vehicle operates on regular unleaded gasoline with a minimum pump (R+M)/2 octane rating of 87. Some fuel stations, particularly those in high altitude areas, offer fuels posted as regular unleaded gasoline with an octane rating below 87. The use of these fuels could result in engine damage that will not be covered by the vehicle Warranty.