Sorry in advance for the Gen I response for those of you Gen 2's who don't like hearing from us, I had my 1 gallon tank that I use for lawn mower gas, filled it up with fresh fuel so that I'm all set for lawn mowing season and it was a good chance to drive it a long way. The last bar disappeared on at 577 miles driving home from work, I drove it to 627.1 miles with the tank mileage on the FCD showing at 62 MPG, I thought the manual said 10.4 instead of 10.7, I'll have to double-check that when I get the chance. I filled it at 10.1 to the first click, 10.3 at the second click(which is where I usually stop), and shouldn't have gone to a third click as it shot out the spout and ran down the side of the car at 10.471 gallons.) Whoops! I'm not completely convinced about the 'gas cooling the pump' argument though. I took a look at the service manual, and just like the Prizm(which I've disassembled in the junkyard to verify), it looks like the fuel pump is top-mounted in the tank. Correct me if I'm wrong about that though as the factory service manual seems very vague with its pictures and documentation but it looks just the same, a top mounted pump with a feeder that lays on the bottom. If this is the case, I'd expect damage to the pump only upon complete tank depletion but even then, you'd notice when it sucks air and would likely stop right then.
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Originally Posted by red1dr
It's not good to run the tank dry very often because that may be hard on the in-tank electric fuel pump, which apparently relies on fuel for cooling. When trying to stretch a tank to see how far you can go, you can get a 1-gallon plastic gas tank, fill it with gas, and bring it along so you can pop it into the tank if you run dry. Or you can even pop it into the tank BEFORE you run dry and then add 1 gallon to the amount you pumped for your refill.
My Insight-I's gauge has been accurate. When I went for a personal tank record a couple of years ago, I went a ways after the last pip disappeared from the gauge. The refill (to the first click of the nozzle) was 10.3 gal. The advertised tank capacity is 10.7. But I don't normally run it quite that low.
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