Crikeys you blokes make easy jobs seem hard.
RAD FLUSH THE SIMPLE WAY.
1.Turn heater tap to heat.
2.Remove rad cap and 1x heater hose.'The one with a REMOVABLE hose clamp.'
3.Stick garden hose in said heater hose and turn on full ball.
4.Dirty water will come out of rad and heater outlet...
Nice wagon mate.
I notice you have two big shackles hanging out of the bottem holes on youre new bullbar.
If you are planning on doing snatch or winching recovery's from there, DON'T.
There actually designed only for lifting with youre high lift jack, you can buy specific adapters to fit in...