Hello.
Going to try and do this job tomorrow. Is there anything I need to know / avoid when draining and re-filling coolant or changing the water pump?
Thanks.
11 litres will probably be enough, 12.4 is for a completely empty system, it's unlikely you will manage to completely empty it. If it's not enough, it's only going to be a little short, I'd use undiluted coolant to top it up if you need to.
Don't forget to get a new O ring for the back plate of the water pump. It's probably not included with a generic water pump.
I didn't replace it and it started to leak, had to do the whole thing over.
I think the most important part of a coolant change is to measure what has been drained in litres before you refil.
It gives you an immediate indication that you have not satisfactorily refilled.
I removed 7 litres last september, it took 6 litres straightaway and some time and burping before the other litre was taken.