Coolant top-up on the cheap

[hobbit]

[Havent't been on here in a while, and nothing obvious pops up on a couple of searches]
After getting the coolant-swap a while ago, I've noticed that the level in the reservoir has dropped
slightly below the "min" mark. Does anyone know enough about the composition and specs of
the hyper-expensive Hyundai blue stuff to comment on whether simply topping up the level with
a little deionized water is a bad idea? It wouldn't be nearly enough to affect the antifreeze ability
of a typical 50/50 mix.

_H*

 

[KiwiME]

All I can offer is that a slight drop in coolant level has frequently been reported after the coolant swap procedure.

Owners drop by the dealer and they top it off for free.

 

[hobbit]

I'll go the water route as an experiment, then. I also haven't pulled out my coolant testing stuff
in a while, it'll be interesting to see how the strips react to this variant.

_H*