Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site cdstar.UUCP Path: utzoo!watmath!clyde!bonnie!akgua!whuxlm!harpo!decvax!genrad!panda!talcott!wjh12!cdstar!saltiel 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." Brought to you by Super Global Mega Corp .com