In article <c_ydnWVcmJFbKDfcRVn-vw@comcast.com>,
"Edward Quinn" <edward-quinn@comcast.net> wrote:

> ive been using amoco ultimate in my 04 accord should i switch to regular??

Use the fuel that your owner's manual recommends.

In your case, 86 octane fuel is fine. Anything else, you're wasting
your money.