Quote:
Originally Posted by pHaestus
In my normal systems I use 10% propylene glycol (Fisher reagent grade)/90% 18MOhm d-dei water (from my Barnstead NanoPure system at work). But I'm a weirdo 
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Hey dude,
I'm going to use Zerex now and luckily I know someone who very kindly gave me some UltraPure water:
http://www.millipore.com/catalogue.nsf/docs/C7658
It's 5 litres, so hopefully it'll be enough for two fills...
I have found out that my radiator is aluminium (or aluminum for you guys

)

I was told it was copper. Inside, it looks like brass, but I scraped a small amount of paint off and it looks silver....