QUOTE(break_even @ Jun 17 2014, 05:18 PM)
tq for your info.
b4 i already changed the belting, now its singing again. i dont know why.
may i know what is your daily FC? min to max? average?
can anyone here with 140k++ mileage persona share your FC??
somesays that tune back engine & ecu can give better FC? enlighten me about this. tq.

Comparing FC with other is not going to help due to different driving conditions, style, traffic, city vs highway speed ratio, etc.
If you want to ensure your engine is in tip top condition, just change your engine oil every 5K (not 10K) to clean the engine frequently.
Decarbonise the engine, then go clean throttle body. Ensure air filter lasted no more than 20K mileage, change a new filter every 10-15K if possible. Change fresh gear oil every 20K at minimum. Make sure there is no leak in engine. If parts were already worn, go no choice, either live with it or change new ones, a good mechanic can do a thorough check and do recommendation.
Go install Lighten Crank Pulley by Works Engineering or Mytheo if you can afford it, if you want to avoid heavy footing during traffic jams.
An average of 8-9 liter / 100 km for a balanced mixed of highway and city runs. Pure city runs can go anywhere from 9-12 liter /100km. Heavy footer tak payah cakap, 13 liter and up. Pure highway runs can go about 7+ to 8 liters / 100km.