I'll have to let you know regarding the heater. The coolant seemed to be nice and green, it took 1/2 a litre to top it up. Unfortunately I used pink stuff which seems to get people very excited, will this much cause a problem? The fan is an electric one, what do you need to know about it?
What does the heater do? Does it match the guage? Is there antifreeze in the car?
What kind of fan does the car have?