dpnding on your driving habits and route:
vpower - pro: better milieage, more power, no need to topup tank
for drive fr S'pore till butterworth for 1.6L sedan, 55L!
caltex gold, mobil s8000 - pro: slightly cheaper, acceptable
power
caltex silver, mobil s5000 - pro: cheap, only good for road in
S'pore
value of each petrol over fc ratio differs for every car. nobody
can tell you which is better until u try on your own car. i've
tried all types on 4 cars already. but the one decides which i pump
is still which card / station offers me more freebies / discounts /
accessibility...hee hee
some petrol burns more during pickup while some less.
some better for long distance while some less
it's fun to try all petrol yourself.
as for the new sunny, my fren only hit max 9.5km/L with all
types...
you may need to consider to mod ur car....