Well if l fill it to the brim, l get about 50 miles before the needle moves from full, but as soon as that happens the rest of the tank seems to vanish, but l dont drive it economically, it is to much fun not to
well l used to run my 4mo on 98 and started to use 95 a few months ago and havent noticed much difference to be honest, so l think 95 is fine for daily use.