[Healeys] gas additives

[Bob Haskell]

Patrick,

Are we using the same octane ratings?  Here in the US, the octane rating is 
the average of the Research Octane Number (RON) and Motor Octane Number 
(MON).  According to wikipedia, Australia uses the RON which is normally 8 
to 10 points higher than the MON.  So 91 octane in the US is probably close 
to the 95 octane in Australia (just guessing).

http://en.wikipedia.org/wiki/Octane_rating


Bob

Quinn, Patrick wrote:
> G'day
> 
> The only gas that goes into my Austin-Healey is in the tyres. The
> thought of running my Austin-Healey on 91 octane petrol gives me the
> willies.
> 
> Here in the antipodes we have a choice of 91, 95 and 98 octane. Even
> with 98 octane the engine still pings so I always add a combined octane
> booster and lubricant.
> 
> The worry is that various state governments are legislating the 91
> octane fuel must have at least 10% ethanol.
> 
> Hoo Roo
> 
> Patrick Quinn
> Sydney, Australia
> 
> (Where every young lady looks like Fifi)
> 
> 
> 
> -----Original Message-----
> From: healeys-bounces+patrick.quinn=det.nsw.edu.au at autox.team.net
> [mailto:healeys-bounces+patrick.quinn=det.nsw.edu.au at autox.team.net] On
> Behalf Of T W
> Sent: Wednesday, 16 April 2008 10:39 AM
> To: Healeys at autox.team.net
> Subject: Re: [Healeys] gas additives
> 
> I started using fuel injector/carb cleaner back in the 90's.  A local
> Honda
> dealer in MD recommended it to a friend after they replaced all the fuel
> injectors in his Prelude.
> 
> Anyway,  anyone else noticing the demise of 93 octane gas?   Last summer
> the
> local Shell station switched from 93 to 91 octane high test. Today on my
> way
> home, I stopped at the Mobil station which sold 93 octane gas, and they
> had
> a 91 octane sticker pasted over the 93 octane pump.    I think Gulf is
> the
> only one left in my area still selling 93 octane.
> 
> - Tom
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