I'm buying an F650GS Dakar this week here in Kuwait. Today the max temp was something like 48* C. A scorcher. While I don't expect to ride during the heat of the day, I certainly don't need anti-freeze here. What would you guys recommend I use, as I should flush the coolant anyway (bike's been sitting a while)? I am thinking water. Can I use tap water (here it is pretty salty, might need distilled).