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What's your minimum coolant temp for EOC?
Oil is much more viscous when it's cold, so I'm hesitant to wantonly cycle the engine on and off before it warms up. Using coolant temperature as a proxy for oil temperature, at what temperature do you decide it's okay to start using the kill switch?
It's been reported on InsightCentral that a Honda Insight with factory programming will enter auto stop at just over 100°F coolant temperature in a warm enough climate, so that's a temp above which it's guaranteed to be safe from a lubrication standpoint. I've been using about 90°F as the point at which I EOC.
But waiting that long costs me plenty of mpg. I didn't reach 90°F until I had exited my neighborhood (four complete stops, 0.3mi). I can do the first 0.3mi on a third as much gas if I EOC from the get-go, which would result in a 6% improvement in my 9mi commute average mpg.
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