I'm using the old style Prestone or generic equivalent 50/50 mix in my ATV. I've never used anything else in any of them.

 

the dealer says to use non-silicate coolants or it will mess up the water pump. But I’m quite sure water is not the answer. Thank you kindly for the response

 

Water is definitely not right for it. What does your owner's manual say? Mine says to use Polaris Premium 60/40 or a 50/50 mixture of high quality aluminum compatible anti-freeze/coolant and distilled water. If the old greenish color coolants weren't compatible with aluminum, I think we would have heard about it by now. You can't use it in newer cars and trucks with higher revving and hotter running engines, but I don't know how that applies to old ATVs. Polaris also recommends that you drain and refill your cooling system every 2 years. I'm 8 years overdue on mine. If it overheats this summer I'll change it.