Andrew, my 71HC engine will run on the cheap stuff quite happily. You
might give it a try and compare gas mileage, the cash saved from the
switch might weigh you down a bit though.
James Nazarian
'71 B roadster
'71 BGT rust free and burnt orange
'63 Buick 215
"Aerodynamics are for people who cannot build engines"
Enzo Ferrari
On Thu, 6 Jul 2000, Andrew B. Lundgren wrote:
> I have usually run the highest grade (since we are both in Co it is the same
>as your, I work about 15 min outside of boulder) in my '68 engine. Now I have
>a '77 with lower compression. Probably won't matter a bit either way. There
>is actaully 2 places I know of in the area that will pre-mix a lead substitute
>fuel and call it regular out of the pump. I used that until I replaced my
>head with the AL one.
>
> On Wed, 5 Jul 2000, James Nazarian Jr wrote:
>
> > Bassically the rule of thumb is to use the lowest octane that you can
> > without pinging. The recomendation is that number. I run low grade gas in
> > my B here Andrew, and have no problems. If you try it and it pings you
> > will have to go to higher gas, but I doubt you will have the problem.
> >
> > James Nazarian
> > 71 B Roadster
> > 71 BGT
> > 63 Buick 215
> >
> > "Aerodynamics are for people who cannot build engines"
> > Enzo Ferrari
> >
> > ----------
> > > From: Andrew B. Lundgren <Lundgren@iname.com>
> > > To: Gonaj@aol.com
> > > Cc: yd3@nvc.net; mgs@autox.team.net
> > > Subject: Re: Octane and altitude ratios???
> > > Date: Wednesday, July 05, 2000 10:32 AM
> > >
> > > That damage to the pocket book is what I am trying to avoid. I have a
> > Ford Explorer as well as an MGB that gets 15-16mpg... The owners manual
> > says 87 or higher, but I think that is calcualted for sea-level. When I
> > buy the highest available octain I get better gas mileage... This is just
> > one of lives mysteries I wanted to understand better.
> > >
> > >
> > > On Wed, 5 Jul 2000 Gonaj@aol.com wrote:
> > >
> > > > Maybe I have misunderstood something in the past, but I am under the
> > > > impression that your engine never needs a lower octant it simply
> > nosen't need
> > > > the higher octane. In other words there is no loss or damage due to
> > higher
> > > > octane than necessary, other than to your wallet unlike the damage wich
> >
> > > > results from lower than necessary octane.
> > > >
> > > > If I am wrong here please explain.
> > > >
> > > > George
> > > >
> >
>
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