The bottom corner of the radiator. Drivers Side
There is a plastic drain valve on one of the bottom corner's of the radiator (facing engine) open valve and properly catch & dispose of coolant that comes out. You may need to use pliers to loosen drain valve. Tighten by hand.
No
The 2004 Ford Focus has an inline 4 engine.
The only way to drain all the coolant is to unhook the bottom radiator hose. The radiator does NOT have a drain vale.
The 2004 Ford Focus has a 2.0 L base engine size.
The 2004 Ford Focus's engine produces 130 hp @ 5300 rpm.
The 2004 Ford Focus's engine produces 135 ft-lbs. @ 4500 rpm.
With the 2.0 engine, 6.5 qts coolant capacity. The 2.4 turbo engine, 8 qts coolant capacity.
Drain plug or petcock at bottom or rear of radiator or Remove lower radiator hose
The basic method of draining the coolant is the same in all cars. Basically there should be a drain plug at the lower part of the radiator. Look in the car handbook to locate this. Open this and keep a bucket or container as it will drain fluid. Once drained, close the drain plug and top it with coolant. Check the ratio of the coolant mixture on the bottle
Google Honda pilot block heater. There is a parts dealer that includes installation instructions showing where the plug is to drain the coolant. This is where the block heater screws in, replacing the bolt.
2004 vw beetles have an aluminum engine therefore require the blue colored coolant.