Is premium fuel REALEY needed
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AudiWorld Super User
Joined: Feb 2004
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From: Canada (NCR)
Is premium fuel REALEY needed
what does everyone think of the fact that that Audi manuals say that you can only put premium fuel in your car. I have used normal fuel with no noticable diff (other than power) Let me know what you all use people.
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Well, they are 10.5:1.
Most cases, premium or midgrade should be used, but then again, the ignition system is a little more advanced than my 72 Camaro was :-).
I run 87 in the Duke all the time, and he took no prisoners.
I run 87 in the Duke all the time, and he took no prisoners.
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I use only 92. When I have used unleaded in the past I notice more knocking and engine noise as well
as less power. Thats also probably cause the time I ran out of gas and had to put unleaded in, it was a really crappy gas station with watered down gas or something.
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Anything will do, but if you have knock sensor, higher octane will equal better performance.
With a knock sensor, the ECU advances timing until it "hears" a knock, then it retards a bit. With higher octane, the ECU is able to advance timing further before "hearing" knock.
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So what octane is ideal?
Around here the best you can do is 91 or 92 at regular fuel outlets. You can buy racing and semi-racing fuel with much a higher octane rating. Would there be any performance advantage if I ran, say 95? 100?
Just curious...
Just curious...