always go by expressway.
avoid jam, travel @ nite if possible, can off aircon.
off aircon, open window, but after 80km/h must off window!
best fuel saving speed is 60 to 70, @ highest gear.
always do servicing! dun skip
right tyres pressure.
let car as light as possible, remove spare tyres, remove rear seat,
go on a diet..
dun let speed drop below 50km/h too slow also waste
fuel...
