Hi, I haven't had my insight too long, but have had some experience getting good mileage on my Civic HX. I have been averaging 72 mpg on my current tank of gas, but have a question. I can tell when I get into lean burn mode, but is it better to cruise in lean burn in 4th gear or lower the rpm and cruise in 5th. Seems like at 40-45 mph or when accending a slight grade I can maintain lean burn in 4th gear, but not in 5th unleass I'm going faster or I'm on the flats. At 50 mph + I can cruise efficiently in 5th. So should I stay in 4th and stay in the lean burn mode as long as I can. From the readout, it seems like 4th gear is more efficient, contrary to what I've always believed. Also, is it better at times to use some IMA in a lower gear early to pick up speed when going up a grade and then ease off and upshift as you hit the crest. I can see why the guys with MIMA can take advantage of this. I rarely see my battery level go down more that a couple of bars. I don't push down on the throttle much. In my HX, I've always used my Scanguage, keeping an eye on the GPH and lose speed going up a grade til I hit the crest.