Quote:
Originally Posted by Perfectlap
you know you just jinxed yourself right? 
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Heh, yeah, you may have a point.
Still, I followed the multi-step burping process with forensic care and a thousand miles or so later, appears to be OK. I managed to fit all but a couple of litres at most of my 20 litres of freshly mixed coolant, so hopefully, there's little or no air stuck in the system.
I think my coolant had a mix of coolant types in it due to a slow leak from one rad. I was always going to loose a lot of coolant changing the rads and pump, so for me I maintain it made sense to totally flush the system.
I also think that over time any coolant is likely to get a little contaminated and see its electrical insulating properties degrade leading to damaging electrolysis.