octane baby!

[sad_rocc at yahoo.com (Dan Smith)]

So it would appear to be that the summarization of all this is if I had a knock sensor, I would get better mileage with higher octane gas. Since I have a low-compression engine with no knock sensor, the cheap stuff is better. Am I correct? And does anyone know know what song the subject line is based one? I'll give you a hint, the group that does it has Bono in it, and not Sonny. Thanks for all the responses!
 
Dan
Ask the list what color the sky is and I can guarentee a 50+ post war erupts.

John Lagnese <jlagnese@massed.net> wrote:
I recall hearing that with the knock sensor higher octane = higher mileage.
The KS retards the timing when there is predetonation. I get measurable if
not noticable increase.
John
87 16V
----- Original Message -----
From: "Dan Bubb" 
To: "Dan Smith" ; 
Sent: Sunday, September 14, 2003 8:33 PM
Subject: Re: octane baby!


> Rumor has it that higher octane gas has less energy content per unit
volume.
> i.e. higher octane gas will give you less MPG.
> In any case it certainly doesn't have 10% more energy per unit volume to
> make it cost effective.
> Use high octane if you need it. The JH doesn't.
> A JH with 8.5 CR will be happy with the cheapest swill available at the
> pump.
> Dan
>
> ----- Original Message -----
> From: Dan Smith 
> To: 
> Sent: Sunday, September 14, 2003 6:27 PM
> Subject: octane baby!
>
>
> > Yeah, a corny play on a song title, but I couldn't resist. Anyways, CO
has
> octane ratings at the pump ranging from 85 to 94. With gas prices ranging
> from $1.77 to 1.99 respectively, I want to see if I can settle this hot
> debate among my housemates. Does higher octane gas equal better gas
mileage?
> And enough of a better mileage to make it cost effective? This would be
for
> my relatively stock 84 8v, which doesn't deserve high octane gas if it
> doesn't make a difference mileage-wise. When responding, please try to
keep
> the formula equations to a minimum as high school chem was a long time ago
> and I just squeeked by.
> >
> > TIA,
> > Dan
> >
> >
> > ---------------------------------
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>
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