On Fri, 15 Apr 2005 23:51:44 GMT, John Ings <nodamned@spam.org>
wrote:

>On Fri, 15 Apr 2005 19:09:09 -0400, Douglas Dou
><douglas_dou@yahoo.com> wrote:
>
>>Thanks for the link. The link essentially says that 87 in pump station
>>is the same thing as 91 recommended in manual.
>
>No. If the manual says 91 is suitable, then that's the octane that
>will give you the most power. If economy is more important to you than
>performance, then you can use 87.
>
>>Can't understand why
>>Honda does not put 87 in it since the cars are sold in America.
>
>The reason is compression ratio. If you have a high enough compression
>ratio, then 91 octane is able to give you more power. If you want
>economy, the knock sensor will dial back your ignition advance, you
>will have less power, but better fuel econmy.

In the FAQ, I thought it said "less power and LESS fuel economy."
Which is correct? If the lower octane will definitely give better
fuel economy, then I can live with less power, but that's not how I
thought it worked. Please explain further.

>

Ron