Re: MPG

[mit-eddie!bellcore.bellcore.com!taichi!whs70@EDDIE.MIT.EDU]

Ed Devinney writes:
>Someone (I can't decipher the header) writes:
>
>Speaking of octane, has anyone had experience with mixing leaded
>regular and unleaded premium? The theory is that the result should have
>higher octane than the unleaded rating.
>--- end citation
>
>Additionally, I remember reading a year or so ago that the reduced lead
>available in current leaded gas was insufficient to allow the octane 'pushing'
>effect that mixing might have.
>
Ed is correct.  With 'leaded' regular now containing less than 1/10 gram of 
lead per gallon, the mixing of leaded regular (nominally around 89 octane)
and unleaded premium (92 to 94 octane) will no longer result in a higher
octane rating than that of the unleaded premium.

Bill Sohl