Date: Fri, 04 Mar 2005 01:50:04 GMT From: John B <rotten_NOSPAM_nospam.org> Subject: Re: Saab 9-3: What octane to tank?
On 3 Mar 2005 12:36:35 -0800, R. Frist <fristnospamt.edu> wrote: > > Another consideration may be carbon deposits. A friend of mine has a > Cadillac with signs "Use only premium fuel" all over it. He claims > that using premium is a waste and has only used 87 for the last 10,000 > miles. He now complains that the car keeps running on roughly after > turning off the ignition. A few years ago, I started experiencing some rough idle and stalling from my 1992 (classic) 900. I was running 89 octane in it at the time (which is mid-grade around here, and is suggested I think in the owners manual), and someone suggested I try premium (93). I did, and the problem cured itself by the end of the tank. I've continued running 93 octane, and it's been fine since. That was at least 15k miles ago. Of course correlation != causation, necessarily. This is the 2.1L NA engine. John
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