This site is a wealth of information.  I've been reading a lot of posts about cooling system anti-freeze.  I have a 2007 Fleetwood with a C-7 300 Cat Motor.  I Came back from Boulder City on Monday and 1 mile from my house my low coolant light came on, then check engine light, then the MH went into "protective mode"...little power, could only go about 15 mph.  I made it to the house while checking the engine temp...never got above 200 deg.  Coolant was flowing out when I parked.  My overflow tank hose came loose from the bracket mount and a section of it was cut by the fan blades.  I bought a new section of 3/8" hose (actually fuel hose) and will try and find a new way of mounting a bracket or clamp so that this does not happen again.
Here is my dilemma...there is a sticker on the radiator that indicates that the system is filled with Alliance Fully Formulated Heavy Duty Coolant (Pre-Charged with SCAs). I am not sure how much fluid was lost (probably a lot).  Since my MH is 6 years old and has 16k miles on it, it probably is due for a coolant change anyway. Should I refill with the Fleet Charge (with SCAs) or flush and switch to the Cat EC-1 (ELC) with embitterment?  From what I read above, flushing and changing over will be somewhat of a task...is it worth it?