So one might construe that the Air-cooled brethren ought to use higher
octane to prevent pre-ignition. We do have much higher head temps.

Sean Garrett
1981 Westy (his)
1995 Eurovan Camper (hers)
sean.garrett@asu.edu

> -----Original Message-----
> From: Matthew Libby [mailto:MLibby1@CFL.RR.COM]
> Sent: Thursday, October 03, 2002 11:41 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: what's the best kind of gasoline?
>
>
> This is a false conception about high octance/  Higher octane
> just means
> that the fuel is harder to ignite.   Only high temp and or
> high compression
> engines benefit at all from high octance.
> ----- Original Message -----
> From: "Malcolm Stebbins" <Malcolm.Stebbins@MSVU.CA>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Thursday, October 03, 2002 9:27 AM
> Subject: Re: what's the best kind of gasoline?
>
>
> > I dare not post anything w/o first doing an archive search :-)))
> >
> >  I did find that Joel Walker posted on this topic back on
> 17 Sep 94!  (
> > http://gerry.vanagon.com/cgi-
> > bin/wa.exe?A2=ind9409&L=vanagon&P=R17458 )
> >
> > I then did a google.com search related to this topic as I
> was trying to
> > find backing for what my mechanic tells me:  Premium gas is
> 'better' in
> > that one can go farther on a tank of premium than on a tank
> of regular
> > and that one should be looking at costs per kilometre/mile
> rather than
> > cost/litre (gallon).  He also suggests that since premium burns more
> > slowly (I'll assume that this is correct) that there is
> more of 'push' on
> > the piston and less of a 'slap' therefore being easier on
> the engine.
> >
> > So what did I find on Google?  Nothing.  I tried AAA and CAA too:
> > nothing.  Can anyone speak to this issue?  Malcolm
>