You know what hurts?
You have a 75 litre tank but you did the setup as 79 litres and always thought it was 79 litres. Then you go down to under 7 litres remaining on your first tank of winter gas, not knowing when to refill cheapest. Then, just after driving past a gas station and then a short discussion of needing gas you lose power, coast a very long way and safely stop and then realize you should have slammed the brakes right there and saved 3 blocks! LOL
Then you have to buy the little 1 gallon jerry can than dumps ¼ of the gas on the street.
Don't be your ScanGauge's fool!!!