Yo, Tom & Ray, Haven't you ever heard of miles per gallon? The lady with the broken gas gauge sender needed only to do a little arithmetic, not drive till she ran out of gas. Here's how it works: 1. Fill the tank, using automatic shut off. Zero Trip odometer. 2. Drive till you get nervous. 3. Fill the tank again, using automatic shutoff. Write down miles. Divide by gallons. Zero trip odometer again. 4. Look up tank capacity in owners manual. Subtract 2 or 3. Multiply by mpg. 5. Drive until trip odometer says this number. 6. Fill tank. Reset trip odometer. 7. Repeat steps 5 and 6 until you get a new car.

I work on 1930's cars, and we run across the same issues with the old cars, where the sending unit is located on the top of the gas tank, and in order to get at it you must remove the entire tank just like the Ray & Tom were saying about the 1999 Subaru. However last week I found a clever exception to this common practice of hiding the sending unit. So if you have some extra change and want a nice looking car one might consider the 1933 Chrysler imperial. The gas tank is located in the rear with duel chrome gas caps; one on the left & one on the right. However the cap on the right is a dummy cap that covers the sending unit so if there is a problem you don't have to drop the tank. You think they might have gotten a bit further since the 1930's just saying.