My normal is 9.5kms/liter but I have had to drive very conservatively for this to happen.

Sa hi-way mas mataas. It reaches more than 12. I dont know precisely kung ilan pero more than 12 kasi this long vacation I got 560kms on 45 liters combined city/hway - 12.4kms/liter

The biggest secret is to accelerate gently. Dont press the pedal until at least youre in third gear. Medyo mabagal ang acceleration kasi mabigat ung kaha pero wag mo pipilitin pabilisin. You'll just end up wasting gas.

Incidentally, hindi ko alam kung ano nagpapabigat sa car natin. Yung kaha kaya nya lang talaga ang mabigat? Kasi wala nmn ako makita na kakaiba para maging ganun kabigay un.