are these correct?

1) Drain radiator by turning valve at bottom
2) Fill and run car for 15 min with radiator cap off. When no more bubbles appear, there is no more air in the system.
3) Done?

 

Exactly

 

should he flow water through the system to get impurities out of it?

 

I would only bother if your replacing a nasty old radiator and you want to make sure there is no crud in the coolant system. There should be a coolant drain plug on the back side of the motor that you can open to drain and flush the motor.

 

I drained my coolant, and wanted to put the coolant back into the system. When I was filling the coolant in the radiator cap, it filled up before I was finished pouring all the fluid in.. is this normal?

I started the car and saw air bubbles coming out from time to time, but some of it dripped off the radiator cap..

Now the car appears to be ok, but how can I tell if there's any air bubbles still in the system? My temperature guage is fine. back to the way it was before.

 

you also need to make sure you turn your heater on to high heat and full fan.

 

so when I start the engine, turn the fan on full and heat

Also when I was refilling the coolant, the radiator cap filled up before I was finished pouring the rest of it in. Some air bubbles came up, so I poured a little more, but I couldn't pour the whole bottle in (I just drained the coolant and was pouring it back in). So after the fan came on I poured the rest of it in the white coolant container.