2005-2009 Mustang Information on The S197 {Gen1}
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Regular fuel 87 octane

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Old 11/12/04, 03:34 PM
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We've heard a lot about the less than stellar fuel economy of the V8 / GT;

But, how is it running on the regular 87 octane fuel ? No pinging, sputtering, missing? Smooth running and acceleration? Good power?

Weigh in and let us know, guys and gals. Thanks.
Old 11/12/04, 03:51 PM
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Come on, folks. No one wants to report on engine performance on regular gas??

Is this an issue??
Old 11/12/04, 03:57 PM
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I am kind of curious myself. Come chime in someone!
Old 11/12/04, 03:58 PM
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Originally posted by maucoin65@November 12, 2004, 5:54 PM
Come on, folks. No one wants to report on engine performance on regular gas??

Is this an issue??
Against my instincts, I have been using 87 octane, and am happy to report that the engine does not knock, or do anything funny. It pulls strong, and I have no problem accelerating quickly to the posted speed limits .
Old 11/12/04, 04:39 PM
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Is the new Mustang engine not built to run on regular? As I understand if this car is built to run on regular, premium would actually end up damaging the engine right?
Old 11/12/04, 04:42 PM
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Originally posted by maucoin65@November 12, 2004, 2:54 PM
Come on, folks. No one wants to report on engine performance on regular gas??

Is this an issue??
Kids these days. You gave everyone all of 17 minutes to respond? Some of us work for a living...

Runs great.
Old 11/12/04, 04:59 PM
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From what I understand the 3v engine is designed to run with full power on 87 gas, in which case running 93 would not provide any further increase in horsepower, you would just be throwing away the extra .20/gal...yet another reason to buy one
Old 11/12/04, 05:08 PM
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Originally posted by M1Rifle+November 12, 2004, 5:45 PM--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (M1Rifle @ November 12, 2004, 5:45 PM)</td></tr><tr><td id='QUOTE'> <!--QuoteBegin-maucoin65@November 12, 2004, 2:54 PM
Come on, folks. No one wants to report on engine performance on regular gas??

Is this an issue??
Kids these days. You gave everyone all of 17 minutes to respond? Some of us work for a living...

Runs great. [/b][/quote]
Sorry Bill, didn't mean to rush everyone. Typically new topics are jumped on almost immediately. I work too; had just returned home after being at the office since 6:30 a.m.

And, thanks for the compliment. I haven't been called a "kid" in, oh, about 35 years or so.

Glad to see the good reports. Just because it is "made to run on regular 87 octane" doesn't guarantee that it will; especially with a brand new engine. Twas just curious to confirm the performance, since I hadn't seen anything here on this subject.

Have a good one....
Old 11/12/04, 05:10 PM
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the 05 and 99-04 are designed to run on 87. the manual even states not to use "premium"
Old 11/12/04, 05:12 PM
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mine sputtered when I did a launch and hits a patch of sand on the road with the trac-control of. The fact that I probably hit 6500Rpm may be the reason You dont want to do this, hopefully the electronic throttle eased the damage. ouch. Other than that I haven't had any problems with 97 octane
Old 11/12/04, 05:13 PM
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Originally posted by holler@November 12, 2004, 6:13 PM
the 05 and 99-04 are designed to run on 87. the manual even states not to use "premium"
Hmmm, I didn't know that the 99-04 were designed for regular / 87 octane. I understood that this was a new feature of the 2005 V8 engine.

I know the 2004 Mach 1 requires premium....but that must be different....
Old 11/12/04, 05:16 PM
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Runs great, no problem!
Old 11/12/04, 05:17 PM
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Originally posted by 97svtgoin05gt@November 12, 2004, 6:19 PM
Runs great, no problem!
Fantastic !! That's really great to hear.

Now if we can get those Shakers to quit spitting out CDs.....
Old 11/12/04, 06:06 PM
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Runs great, very energetic , smooth, and solid.
Old 11/12/04, 06:24 PM
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Isn't it funny, i got my 5.0 back in '88 to run on regular, then started using 94 octane after a few years, then went back to regular...that's when the problems(Pinging, loss of power) started, had to go back with 94oct...Everything is now back to normal, maybe that 5.0 responds much better to higher octane than modular engines....
Old 11/12/04, 06:32 PM
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Originally posted by maucoin65@November 12, 2004, 4:11 PM

And, thanks for the compliment. I haven't been called a "kid" in, oh, about 35 years or so.

You're welcome, Pops!

;-)
Old 11/12/04, 06:35 PM
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Originally posted by montreal ponies@November 12, 2004, 5:27 PM
Isn't it funny, i got my 5.0 back in '88 to run on regular, then started using 94 octane after a few years, then went back to regular...that's when the problems(Pinging, loss of power) started, had to go back with 94oct...Everything is now back to normal, maybe that 5.0 responds much better to higher octane than modular engines....
Older cars have more carbon deposits which lead to hot spots, leading to pinging.
Old 11/12/04, 07:10 PM
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Originally posted by Stadifer@November 12, 2004, 5:42 PM
Is the new Mustang engine not built to run on regular? As I understand if this car is built to run on regular, premium would actually end up damaging the engine right?
I can't see premium gas damaging any engine. You should be able to run premium in anything.
Old 11/12/04, 07:15 PM
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Originally posted by M1Rifle@November 12, 2004, 5:45 PM
Kids these days. You gave everyone all of 17 minutes to respond? Some of us work for a living...

Runs great.
:notnice: HEY IM GOIN ON 18 IN JANUARY AND IM WORKING AND SAVING FOR MY MUSTANG!!!!!!!...................
Old 11/12/04, 08:44 PM
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Runs great! My last tank of gas had 80% in-town & 20% highway driving and I got 19.7 MPG

Mike


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