Hi,
Can anyone offer me some advice please?
I have a 2000 Discovery TD5. It has done around 53K miles.
When accelerating air can be heard travelling through the heater matrix behind the dashboard.
The expansion tank was nearly empty and I filled it up about two weeks ago. Today it was empty again, so I topped it up and started the engine, all the coolant I added immediately disappeared into the system, so I topped up the expansion tank again, this did not disappear. I bled the system via the bleed screw in the top hose. I then road tested and have allowed it to cool completely. The level in the expansion tank has dropped slightly, but I think this is normal expansion/contraction.
I have only had the car since May this year, and found that one of the bolts securing the radiator was almost falling out, I have re-tightened this, but now suspect that someone has been here before me! The oil is in great condition, with no evidence on the stick of emulsification. The engine runs fine. There is no water on the floor when it's parked. Is it possible that a new radiator was fitted and not bled very well? The radiator looks to be much cleaner than the A/C unit, so I am wondering if it was replaced.
Any clues as to where about two litres of coolant may have gone?
Regards. Paul.