coolant

There are two different types of coolant. Dex Cool and ETHYLENE GLYCOL BASED. Our bikes im pretty sure use the Ethylene glycol stuff (its green). Some coolant manufactures make a universal coolant you can use. but you never want to mix the two together it will lose the qualities it has from the different type of additives. Most of the time in the coolant system when your low its due to the water evaporating out of the system. So most of the time you can just add water and your mixture will be fine. Glycaol based systems they recommend flushing every 2 years or 30k miles. personally Id go three on a bike. Dex Cool they recommend 5 years. Some are 10 year extended life.