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From: saltiel@cdstar.UUCP (Jack Saltiel)
Newsgroups: net.auto
Subject: Re: Octane mixes...
Message-ID: <173@cdstar.UUCP>
Date: Tue, 24-Sep-85 16:46:46 EDT
Article-I.D.: cdstar.173
Posted: Tue Sep 24 16:46:46 1985
Date-Received: Sat, 28-Sep-85 08:04:12 EDT
Organization: Cambridge Digital Systems, Inc.
Lines: 29

In article <556@drutx.UUCP>, clay@drutx.UUCP (Clay Lambert) writes:
>   I have heard that mixing gasolines with different octane ratings
> has a funny effect on the rating of the mix.  For example, mixing
> 1 gallon of 85 octane gas with 1 gallon of 87 octane gas yields
> 2 gallons of gas with an octane rating *greater than* 87.  Is this
> true, or is someone taking advantage of my lack of knowledge on
> the subject?

No, it's true. Mixing about 1 part regular leaded @ 88-89 octane
with 2 parts super unleaded @ 91-92 octane will give you gasoline
that is about 94-95 octane. Beware....it is leaded gas. I don't
know the chemistry, but it works on a high compression turbo
charged motor I drive which is in full European trim. Super
unleaded causes knocking, my mixture does not.
> 
>   Also, I'm told there are two main methods used to determine
> octane ratings.  Does anyone know what those might be?
> 
Yeah there are two. One is a so-called Research Method. I don't
remember what the other is called. They differ from each other by
about 4. What you see at the pump is the average.
> 
-- 
					Jack Saltiel
					Cambridge Digital Systems
					{wjh12,talcott}!cdstar!saltiel

	"Here's to plain speaking and clear understanding."
	"I like a man who likes to talk."