[prodigit]

My 2ct would be, if the engine overheats, your coolant product will boil and evaporate.
Check your coolant levels.
Don't worry about burping, there's no such thing ( just fill it up and let it run).
you can easily add coolant, no need to replace the existing
just make sure you don't have no leak, by checking again after 100-500 miles, if the level has dropped or not.

I did that with my BMS.
I looked at the coolant color (orange), and bought similar color coolant.
The color doesn't really matter, but still I thought it was better than mixing blue and orange; just visually. The bike was orange so...
But really, stay away from Peak coolant! Cheapest and worst stuff out there.

And just refill. You can not overfill, even if you wanted to, the system has an overfill protection, and whatever too much you add, will just be pushed out of the system again.