Octane for '15 5.0

[HalfMoon]

These prices are old and a bit cheaper than now for the high grade stuff (100 was $8.09 last time), but I've filled up on the 100 a lot in the last year. Paying a little more for 91 daily is easy once you've bought 100 for a month or two and drive 150 miles a day.

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[Wblv17]

These prices are old and a bit cheaper than now for the high grade stuff (100 was $8.09 last time), but I've filled up on the 100 a lot in the last year. Paying a little more for 91 daily is easy once you've bought 100 for a month or two and drive 150 miles a day.

:ford::eyebulge::eyebulge::eyebulge::eyebulge::eyebulge:

 

[Trackaholic]

My wife says that I can keep the man card.

That is a great sentence. I love the internal conflict contained within.

-T

 

[foghat]

That is a great sentence. I love the internal conflict contained within.

-T

If it came to the point where my wife telling me I can keep my man card, I'd know it was time to turn it in if I proceeded with whatever it was that made her feel she had to make said statement in the first place. Regardless, he should turn it in on account his wife had to first approve the purchase.

 

[USPSALIMITED]

My wife says that I can keep the man card regardless of the fuel I use. She approved the car purchase.

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That is a great sentence. I love the internal conflict contained within.

-T

If it came to the point where my wife telling me I can keep my man card, I'd know it was time to turn it in if I proceeded with whatever it was that made her feel she had to make said statement in the first place. Regardless, he should turn it in on account his wife had to first approve the purchase.

There are BMW threads for this kind of stuff.

Need to go fart & then talk football just to get that clean feeling again.

 

[RobHunt]

Ok ladies, don't get ur feathers all ruffled up! Some of us are honest and have to discuss buying a $50K summer toy with the wife. When have done 4 overseas tours with the army, perhaps you may have earned your man card. I guess watching football counts?

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[foghat]

Ok ladies, don't get ur feathers all ruffled up! Some of us are honest and have to discuss buying a $50K summer toy with the wife. When have done 4 overseas tours with the army, perhaps you may have earned your man card. I guess watching football counts?

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Just because one has earned (and quite sufficiently in your case) one's man card, does not mean one cannot have it revoked. j/k Enjoy the car.

 

[RobHunt]

Very true. We just dropped a new 5.0 in my friends 94, he told me that I should have it revoked for mentioning how the misses will react to my dirt n oil soaked clothes.

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[foghat]

Very true. We just dropped a new 5.0 in my friends 94, he told me that I should have it revoked for mentioning how the misses will react to my dirt n oil soaked clothes.

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We might have to put you on the 3-strike program. 2 down....

 

[eleanor5oh]

Since when is 11:1 a high compression engine? That's borderline to call it high compression, upwards of 11.5:1 or starts to require high octane to prevent knock, 11:1 does not with variable valve & all the other bells & whistles. With a 1% power loss due to 87 instead of 93, I'll be running 87 octane all 100,000 miles that I'll put on the car in the next 3 years.

Also, what do you define as fuel economy? Is it the price you pay per mile, or the mpg number you see in the cluster? In my area premium is about $0.20 more than 87 regular, or about 6% more. MPG improvement of 93 octane versus 87 octane is about 1% or less. So, pay 6% more money for 1% improvement in mileage is a net loss if you are looking a price per mile. (Simple terms: You pay more money per mile if you use high octane fuel.)

Now since you're paying upward of $40k for a vehicle, yes you can probably afford premium gas. If it makes you feel better to do so, then do it, but there's no necessity on a stock engine to run high octane unless you're at the drag strip where 1% power difference may help. Now, when you put your aftermarket tunes in, by all means do what they tell you to do since you're throwing away the thousands of hours the Ford engineers put into testing and evaluating the engine performance to get it to last 100,000 miles on 87 octane.

Now what I hate is the 10% ethanol mandate in many states, except in Iowa that grows all the damn corn used to make ethanol, they get the option of "normal" fuel without ethanol, it's even CHEAPER. What! Their economy is boosted by the rest of us using their corn and yet they don't have to buy it. That's crazy right there. I will buy non-ethanol fuel any time I can get it, generally see 3 to 5% improvement in fuel mileage without ethanol, but it's hard to know for sure without a controlled test.

Where are you getting the idea that going from 93 to 87 is only a 1% performance loss? Did you do the scientific testing yourself? No?
Ok then. Just another thing on the internet with no evidence. Proceed with caution 87 octane cheapskates.

 

[JimmyTwoTimes]

Where are you getting the idea that going from 93 to 87 is only a 1% performance loss? Did you do the scientific testing yourself? No?
Ok then. Just another thing on the internet with no evidence. Proceed with caution 87 octane cheapskates.

"If you fill up using 87 octane, you’ll be down on horsepower—by about one percent according to Ford. So it’s highly unlikely you’ll notice."

http://www.caranddriver.com/reviews/2015-ford-mustang-gt-instrumented-test-review

 

[EiBStudent]

Well it's a roughly 4-5% horsepower difference (around 20hp probably)...and pulling 20hp would likely add 1.5-2.5 tenths to the 1/4 mile time....which comes out to roughly 1-2% actual performance difference over full 93 octane

His claim makes sense to me...also for people like myself that put 35000 miles a year on our cars, a .60$ per gallon increase over 87 E10 is a lot of money.

Edit: Lol Jimmy beat me to it from Ford directly...guess we took different approaches to validating the claim.

 

[RobHunt]

Shhhh..... Cheapskates! LOL Am I on strike 3 yet?

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[USPSALIMITED]

Ok, if I understand this thread correctly, paying for high octane really does not effect the car in any noticeable way, but if your are mad about the new curtians and afraid to say something to the Mrs., then you should do it?

 

[RobHunt]

Hellz no! She let me buy a toy, she can have whatever curtains she wants. Besides, u need to pick ur battles. I'll gladly trade the man card for sex n sanity, lessons learned, 2nd marriage mon ami. Strike 3 yet?

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