Best way I have found is to pull the upper radiator hose and stick a water hose in the upper radiator inlet.
Turn the water on low to keep the radiator full, start the motor and turn the heater on.
When the water runs clear from the upper hose (after the motor has warmed up and the thermostat has opened) you can drain the water from the radiator and refill with antifreeze.
95' XJ Country - Stock Skids - D30/D35 Limited Slip - 3" Lift - 31x10.50R15 - 4.0 HO - AX15 - NP231
98' XJ Classic - D30/C8.25 - 4.5" RC Lift - 33x12.50R15 - 4.0 HO - AW4 - NP231
You can tell the character of a person in how they treat someone who can do nothing for them.