Coolant

[prydey]

bit of a thread mine but i'm now due (overdue) to do a coolant flush on the wife's focus. unlike when i started this thread 6 years ago, i'm now happy to pay the money and stick with the factory coolant ($105 now).

my question is, to flush the system, is there any tips or tricks i should be aware of. on my falcons that i've done in the past i would just drop the bottom hose, then reverse flush the radiator just with the garden hose (removed from car depending how easy it is) and also flush out the engine just with the garden hose also.

does the heater core drain automatically?

thanks for any advice.