Originally Posted by
Andy 2
before you run your tank dry and suck any residue into your fuel lines there is another way to achieve the same goal. Reset you trip odometer when you fill up. When the trip odometer reads 200 miles for example, fill up again and record how many gallons it takes. Do this a few times resetting the trip meter each time you fill up. You can calculate your mpg each time using simple division, and you can find your average mpg over a period of time by keeping a record of how many gallons you use. 5 recordings of gallons used would equal 1000 miles of driving. This way you can keep lots of gas in the tank without sucking the dregs into your fuel line and you won't run out of gas.