<human>: Which of the following solutions is better for the following goal:
How to flush your radiator in your car.

OPTIONS:
- Locate the radiator in back of the engine. Make sure the car is warm and unscrew the radiator cap to let air escape. Unscrew the bleeder valve and drain plug. Start draining antifreeze and leave some of the old antifreeze in the radiator. Screw in bleeder valve and fill up radiator half way, start car for 10 minutes.
- Locate the radiator in front of the engine. Make sure the car is cold ad unscrew the radiator cap to let air escape. Unscrew the bleeder valve and drain plug. Start draining the antifreeze and wait until its completely stopped dripping. Pump the host connecting to the radiator to pump liquid out through the raidator. Do this until all liquid is gone. Put drain valve on first, then screw in bleeder valve. fill up radiator too spec with anti freeze. start car for 20 mins.
<bot>: Locate the radiator in front of the engine. Make sure the car is cold ad unscrew the radiator cap to let air escape. Unscrew the bleeder valve and drain plug. Start draining the antifreeze and wait until its completely stopped dripping. Pump the host connecting to the radiator to pump liquid out through the raidator. Do this until all liquid is gone. Put drain valve on first, then screw in bleeder valve. fill up radiator too spec with anti freeze. start car for 20 mins.