Absolutely! In fact, I think you're better off with pure coolant. My mechanic does too. If your car is too hot, which is going to keep it cooler? Coolant, that's what. Yes, water is cheaper, but do you really want to potentially put your engine at risk to save a few dollars?
Yes, then add the same amount of water to it. That's what makes it 50/50. Water is not that hard to come by, dear. Treat your car right and it will treat you right.
Look in your owner manual for mixture levels but it should be just fine.
You could yes
no
I have a volkswagon passat. It is inder the min mark right now.