Higher octane doesn't equate to more power. Higher octane resists
igniting more. So you need
more pressure (compression) to get it to fire efficiently. This can
generally correlate to poorer gas milage.
On Jan 15, 2009, at 3:33 PM, Charles & Peggy Robinson wrote:
> First off, congratulations on the new driver! Er, and higher
> insurance premiums. (BG)
>
> Concerning sensitivity of new engines to (you name it), I gotta
> agree. The engine in Peg's Prius is sensitive to over filling of
> the sump. It would appear that if there's too much oil in the pan it
> impeded the crank's rotation and it's manifested in lower gas mileage.
>
> Another thing on the Prius is that it runs worse on higher octane
> gas than regular unleaded. Dunno why.
>
> I remember the sludge incidences. AIR they did e re-design of the
> breather/EGR systems and shortened the change intervals. Weren't
> there some recalls?
>
> CR
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