Rick,
The rule of thumb is: Use the lowest octane that you can and not have
detonation. It saves money and the higher the octane the slower the fuel burns
so you get better performance.
Joe
Rick Gregory wrote:
>
> I'm no expert, but I always use middle of the road. My goal is for a cleaner
> burn with less ping, yet not too hot of a burn. Seems most manufacturers
> recommend something above the low/regular unleaded octane levels, but the
> premium is overkill I think. Just "mho"....
>
> Rick Gregory
> '74 Spitfire 1500
> Great Falls, Montana
> http://www.geocities.com/spitfire74us/index.htm
>
> -----Original Message-----
> From: MKCASPIAN1@aol.com [mailto:MKCASPIAN1@aol.com]
> Sent: Monday, January 28, 2002 3:21 PM
> To: spitfires@autox.team.net
> Subject: Fuel types
>
> Hello,
> We are about to become new -old spitfire owners. It looks like a 78 - 1500
> with the one Z-S carb. What grade gasoline gets run in a car like this?
> Around here we have regular - midgrade - premium. Thanks for your help.
> John - 78 spitfire - maybe?
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