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Originally Posted by rice_classic
Sometimes it's there, sometimes it's not. I've ran 3 tanks without Ethanol, still got the "chirps" at the same frequency and randomness as with E10. With E10 (and E0) I would go entire trips/days with no chirping and then it was back the next day.
I don't think there's accurate or sufficient enough data to determine if ethanol has any part in it whatsoever. The same thing can be said of Octane level as chirping reports are made in Australia, the UK and Japan; all with "supposedly" better fuel.
I'm ready for someone, anyone to surmise a hypothesis regarding the chirping that isn't fuel related. It might be temperature related. I can more narrowly track the occasions on which it occur to temp then I can fuel type. It almost never happens when cold/startup/first days trip but almost always occurs after long driving and stop/go traffic.
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Quote:
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Originally Posted by tennishsu
9-800 miles w/ 10% ethanol gas= Chirps
801-3300 miles w/ ethanol free gas= zero Chirps
Was in a rush the other day and filled up with Shell 92 w/ 10% ethanol, chirps return in 10 minutes!
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I was chirpless for the entire time using ethanol free gas, that is enough evidence for me to suggest ethanol is the main culprit here.