Just coming up to 60,000 miles and I thought I would change the coolant as per the handbook recommendations. Put the heater onto the hot position, took the cap off the expansion bottleand opened up the drain plug in the bottom of the radiator. I got about 2 litres out. The hand book says it should hold around 5.3 litres. I noticed the bottom hose enters the cylinder block about 1/3rd of the way up so is there another drain point on the block?