[AlanJohnson]

I've read all the posts I can find on changing the engine coolant in my Series 60, and they have been very instructive. Based on those posts I am going to drain, fill with distilled water, bring up to temp, drain again, and then fill with Final Charge concentrate/distilled water 50/50 mix.  But I have a few novice questions:

1. Where are the drain points, besides radiator petcock?
2. Do I need to remove lower radiator hose as well for draining?  
3. I bought a pass-thru filter that I thought was correct... but I can't find any coolant filter on my coach. Where would this be, or is it possible I don't have one?
4. I'm planning to fill it up with distilled water, start it and bring it up to temp.  Then start again at #1 (after it cools).  Anything else?
5. Will I need to burp it anywhere? Or will air come out by itself?

Thanks as always!
Alan Johnson