Here is the bleeding method.
Sapote's method, Rev 3:
1) engine cold, car on flat ground and do not jack the front up as in other instructions. See revision history below for the explanation.
2) remove bleeder and tank cap, fill coolant to the MAX marker on the tank using the red rod as indicator. Do not fill up to top of tank. Close the bleeder.
3) Set heater to hot and fan low, run engine at idle.
Important: Do not let engine running more than 7 minutes total while the tank cap is not closed, to avoid damaging the cylinder head. Keep engine idling to the end.
Crack open the bleeder for air out, then close bleeder when no more air but only coolant flow out. Fill tank to MAX marker and screw the tank cap by one turn to avoid coolant shooting out later when rev up engine in next step.
4) Rev it up to about 3000 RPM a few times to push out any air pockets into the upper hose.
5) Crack open the bleeder again to let air out and close it when no more air bubbles. Top off the tank to MAX marker. Close the tank cap.
6) Test drive and check for having heated air in cabin. Done.
When engine completely cooled down (next morning) open the tank cap to check and top it off if needed.
Note: If engine already filled with coolant, then start from step #3.
Rev1: bleed during idle and again after rev rpm to 2500 a few times.
Rev2: Prefer to have car at level, but head up on driveway is ok.
Rev 3: Prefer car at level ground instead of head up or jacked up (head up high will cause coolant not able to flow out of the opened bleeder with a cold engine, and this might cause confusion as the users expect to see coolant flowing out after all air was bled out).