coolant stupid question

how do you change the antifreeze in a crown vic? stupid question I know! I cant find the drain plug,and after it's empty how do I refill it? from the resevoir bottle?how about bleeding the air out of the system? any and all help appreciated. thanks,dave

Year and engine would be helpful.

sorry about that is a 94 crown vic lx 4.6l

Drain plug is on the drivers side bottom. We uaually replace the thermostat at the same time and fill the block back through the intake, install thermostat and top hose. Then fill reservoir and allow to run intil normal operating temp. Shut engine off for a few minutes and air will bleed to the reservoir. Refill as needed and start vehicle again until normal operating temp again. Check for leaks and be on your way. Be sure thermostat is opening properly before driving.