full tank is 47 litres....
so if optimax is £1 at the min wihich it roughly is... u lookin at £47 - £50 full tank
i get bout 200 miles outta mine but thaTS all ways round town...
u may get up to 250-300 miles on motorway at a cruise matey...
depends how much fuel ur car set to use too...
mine CO is bout 3.4