Guys i have 2.0L engine sedan..2015 Lancer ex gt-a CVT. I gas up with Petron Xtra Advanced (93 ron) last monday when we took the car from casa...last Tuesday when i drove from lipa city to our place (16km distance) (32km back and forth) i managed to increased FC from 7km/L to 8.5km/L..sometimes I use Cruise control

And today I drove 29.3kms and managed to increase it to 9.2km/L on my full stop...(both are highway driving) maybe more in expressway

Do you think that the FC can be still improved if i change my fuel into Shell fuel save (91 Ron) or ill stay with xtra advance?

My tire pressure is 48psi, what if i decrease it to 32 which is recommended , does it affect the FC right together with changing the fuel? How it will affect? Increasing FC or Decreasing FC?

Which tire should be higher? Front or rear tires?

Thanks..