06 xp 700. I took it to moab and the cooling fan ran a lot. I remember when i first bought the unit and it only came on every so often. I did have to pull the raidiator out for a repair. I blead the the system realy good to get all the air out. The system never steamed over. I think eather an air pocket or a bad ETM (engine temp sensor.) I am thinking of running engine ice for coolant instead of antifreeze.What do you all think.