Hi All:
___I wish there was more Insighter’s over here to talk with
___In an Insight while achieving around 100 mpg from the time the low fuel light comes on to the time she is absolutely, without a doubt, forget about it, bone dry empty, I drove 174 miles. I have heard that 120 - 125 miles was the limit but I was pleasantly surprised. When I left yesterday afternoon for work, I had 0 bars showing on the fuel gauge and still made it 95.7 miles. Approximately 3 blocks after leaving the parking lot tonight, she petered out and not a mile and a half from the BP I filled up at. I had 1.004 gallons in a 1 gallon industrial chemical container for this trip to find out its limits and now I really know.
___Anyway, to find out for yourself, you could always fill up an industrial chemical liter or gallon jug with a known quantity of gasoline and run her dry to find out what your true max range and fuel capacity are. Also keep track of the FCD so you know ~ what your range from the low fuel light or when you have 0 bars showing for the type of mileage you received over that last segment is. As your fuel economy rises or falls during the summer/winter months, you will have a very good idea as to what your actual reserve tank capacity is in almost any circumstance.
___Most Insighter’s can simply multiply the FCD’s tank mpg by 10.5 for a maximum safe range as the Insight’s tank holds 10.9 gallons. HCH owners can do the same depending on if they have the PZEV or ULEV rated versions (multiply by 11.5 or 12.5 respectively). I always fill up to the fuel filler neck with another ~ .3 gallons which allows maximum range and the most accurate fuel economy calculations tank over tank. That is unless you run into the rare situation when you can fill the vapor canister tubing and canister itself. In an Insight, it’s around 14 total gallons and the range is simply phenomenal. I bet a ULEV based HCH could hold around 15 gallons?
___Finally, 04 Prius owners should probably be a bit more conservative with max range estimates as I have read about a number of CEL’s that pop when you run them out of fuel. I have also read numerous times that a Prius’ fuel tank bladder allows varying amounts of fuel to be filled into the tank at different times of the year (temperature related). Subtract another 30 or so miles in your max range estimates would probably be in your automobiles best interest. Multiplying your last total amount of gallons filled times your tanks current fuel consumption off the LCD should suffice for absolutely max empty range but again, the Prius’ consumption screen is a bit more optimistic then most I believe so be careful out there.
___Good Luck
___Wayne R. Gerdes
___Hunt Club Farms Landscaping Ltd.
___
Waynegerdes@earthlink.net