What type of coolant does a polaris scrambler 500 take?

Engine ice is the best but you can get away with normal coolant as long as it says on the back that it will work with aluminum motors. When I bought mine I flushed the radiator using the little valve on the bottom corner to drain all the old coolant and filled it with prestone. If it doesn't say it works with aluminum motors it could start pitting your block and eventually cause problems.