My friend came to put coolant in my car and he was using the one I bought, it was a full concentration one for all colors which the guy at autozone told me to buy for my car; and he noticed a bit into it and then switched it out for the 50/50 one, is that going to be a problem, and if so, what should I do?
Edit: It was a refill, as for how much concentrate was used, it wasn’t a lot, I can’t quantify it but I was maybe a sixth of the container, meanwhile almost an entire container of 50/50 was used.