Thanks Powerman for your advice. Actually the bike is kept in the garage so even though temp outside goes below freezing, it won’t get below freezing in the garage. And I dont ride below 50°F. So I’ll just top it off with distilled water for now and flush it before 90°F temps come. Thanks again.Personally - I avoid mixing different types of coolants.
If you live in a place where you dont see freezing temps, I'd just top up with distilled water for now and monitor to make sure there is no leak.
Later down the line, flush the system with distilled water and replace with new premixed coolant to avoid cross contamination.
Levels will fluctuate due to expansion and contraction principle.What @nedfromPA said. I had my coolant topped during service a few months ago and a week after I happened to notice that the level in the reservoir was below the halfway mark between L and H, which made me think there was a leak. Called up the Kawasaki service and they said it's normal for the levels to fluctuate. A few months later the level went back up near the H level.