Just cleaned out the expansion tank, topped it up and took it for a 10 mile run. Dash temp stayed around 94-97, I booted it a few times and it went up to around 99. Left it idling for a minute when I got back, fan kicked in at 107 and it dropped back down fairly quickly. Hot air coming out of all the vents. Left it to cool a bit and the coolant is red with no oil on it.
I'm going to do a few runs in it over the next few days, but if it stays clear I'll give it a full flush and fill with fresh coolant at the weekend to make sure there's nothing left in the system. Hopefully it was just NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD- left in the system from the previous hgf, and it wasn't cleaned properly. We'll soon find out though!
