Originally Posted by CGameProgrammer
When entering data into the mileage database, it would be nice if there were a checkbox that indicates whether or not the low-fuel alarm went off before the user filled up the tank. . . .
It can just look like "[ ] Did the low-fuel light go on before you got gas?"
This extra mark doesn't add anything to the MPG nor change the tank specifications. Personally, you'll never see that marked in my database because I shop for low priced gas. Instead of waiting for an alarm and being FORCED to buy gas at whatever price is available, I buy when the price is good.
If you want to perform a Prius bladder capacity vs temperature test, buy one from Ebay and perform a controlled experiment. When you 're done, put the tank back for sale on Ebay and publish the results. But this additional input is of marginal utility since so many other factors influence the amount of fuel the tank holds:
1) fuel temperature / density
2) pump and nozzle characteristics
3) level of platform
4) straight or ethonal or methonal blend (energy density)