Actually, winding down the windows will slow down the car, Coz
air resistance is increased, coz the air flow layers are no longer
flowing smoothly around the car. And the air flows into the car
compartment causes turbulences which again increases air
resistance.
Ideally, the car should slice through the air as smoothly as
possible.
[quote]Originally posted by shifeng:
[b]basically no matter wat SPC or mobil or shell or watever petrol
station, its the same... i m driving a lancer and have been pumping
from SPC at hougang here (cos v cheap 10% discount) and i dun find
any difference.... u want more power? off ur aircon and wind down
ur window.. ur car cfm more power than usual.. 