Hi veerg,
I'll make sure to document it while doing it, when I get the time; unfortunately I got some problems that need to be worked out first so, honestly, I don't know if I'll be able to do it next weekend.
Don't worry I'll be glad to take photos and upload them for everyone
Thanks windstartled, yeah I know about distilled water; I'll get some and use it after flushing with tap water; then I'll use the concentrated coolant to bring it to the proper 50/50 mixture.
Oscar.