RodGFX
...in case of emergency. How far can you get with an 07 focus with a 2.0 duratec agter the gas light comes on. Or, how far does the gas hand go down before you actually RUN out of gas, does anybody know?
Welcome to [FJ]focaljet. :thumbup:
If you really want to know exactly how your particular Focus's guage and low-fuel warning light are calibrated, run it into the warning light then stop to fill a gas can and take it with you. Record the trip odometer's reading, then resume driving on a pre-planned test route.
Now, it certainly isn't wise to travel with a full gas can on board on a regular basis, but if necessary caution is taken... blah blah blah... you get my drift.
When the car runs out of fuel or begins to "sputter" hopefully you'll be in an area where you can pull over safely to the side, refuel, and record the mileage you've traveled since the low-fuel warning light first illuminated.
Now then: Contemporary production cars are fitted with an in-tank fuel pump. These pumps are, and are designed to be, submerged in fuel; the fuel acts as a coolant of sorts and as a lubricant. Uncovering the in-tank pump on a regular basis may (will) shorten the potential service life of the pump itself. It has been recommended by several techs I know personally and by published information to avoid driving with the fuel level below one-quarter tank.
Once in a while, sure; that can't be avoided at times, and certainly while traveling on an interstate highway the pump won't become uncovered at one-quarter tank unless you start chopping wood on a twisty road, generating some lateral g or drive in heavy stop and go traffic.
One must resist the urge to say, "But I live on what little I am paid and with these insane gas prices I can't afford to fill up..." Instead, fill up once, then refuel every half-tank. Your initial investment will be higher, but only once... and one will be paying a virtually identical amount to top off from one-half tank as one would with a 20 dollar fill quantity from empty.
Long-wnded, I'm afraid, but... since you seem eager to really know the answer to your questions, [FJ] has answered. LOL.
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