43 litres is over 9 gallons, which should last 360 miles at 40mpg. So you could wait for 300 miles before filling up.
Thats the big IF though Jon.
If there is in fact 43 litres in the tank and all those litres are accessible!
The reason I asked this question was because of a pending trip around Europe, it makes a big difference if you know you have 300 miles in the tank instead of 200 on a long journey.
Sir P
