Alright JP, just have a look in the owners manual/Haynes for what they recommend. I think the main thing is not to mix different types as the differing chemicals can have an effect on each other.
What I do is run the bike up to temp so the thermostat opens, then empty it (including the overfill reservoir) and fill with water, then run again up to temp so the thermostat opens just to be sure I've got as much of the old coolant out, empty completely and then fill with new stuff.
I get coolant from Halfords, as long as it is what the user manual says then I use it, I think for example the Blade manual said to use something ethal glycol (or whatever) based, so I made sure it was (I think the Halfords pink stuff). Not had a problem yet. Same for all my vehicles.
Hope this helps
