Posted by dido on January 2, 2007, 8:11 am
is there any truth to the statement that using a higher octane gasoline will
result in
better gas mileage? I understand that it may have other beneficial properties
ie.
anti-knock, acceleration, etc..
how would one calculate such a statement?
for reference, I usually fillup between 16-20 gallons, regular gas is 87 octane,
supreme 92 octane and in our area the price difference appears to be about
20c-30c
between regular and supreme.
Posted by <HLS on January 2, 2007, 8:17 am
> is there any truth to the statement that using a higher octane gasoline
will result in
> better gas mileage? I understand that it may have other beneficial
properties ie.
> anti-knock, acceleration, etc..
> how would one calculate such a statement?
Dont worry about calculating anything. Octane rating has no direct
relationship
to gas mileage. Antiknock properties are the key.
Posted by stu on January 2, 2007, 8:28 am
> > is there any truth to the statement that using a higher octane gasoline
> will result in
> > better gas mileage? I understand that it may have other beneficial
> properties ie.
> > anti-knock, acceleration, etc..
> >
> > how would one calculate such a statement?
> Dont worry about calculating anything. Octane rating has no direct
> relationship
> to gas mileage. Antiknock properties are the key.
and just what do you think Octane rating a measure of?
Posted by <HLS on January 2, 2007, 8:50 am
> >
> > > is there any truth to the statement that using a higher octane
gasoline
> > will result in
> > > better gas mileage? I understand that it may have other beneficial
> > properties ie.
> > > anti-knock, acceleration, etc..
> > >
> > > how would one calculate such a statement?
> >
> > Dont worry about calculating anything. Octane rating has no direct
> > relationship
> > to gas mileage. Antiknock properties are the key.
> >
> and just what do you think Octane rating a measure of?
The octane rating is, just as I said, a number related to antiknock
properties.
Posted by Eeyore on January 2, 2007, 9:04 am
HLS@nospam.nix wrote:
> > >
> > > Dont worry about calculating anything. Octane rating has no direct
> > > relationship
> > > to gas mileage. Antiknock properties are the key.
> > >
> > and just what do you think Octane rating a measure of?
> The octane rating is, just as I said, a number related to antiknock
> properties.
And good anti-knock properties ( higher octane ) allow the ignition to be
advanced which *may* improve engine efficiency. It pretty much invariably
improves performance.
Graham
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