Thanks, Bill. It looks better than it has ever looked since I've owned it (the exterior was pretty weathered even when I bought it 10 years ago). You all might notice a difference in color in the before/after shots; some of that is due to the difference in sunlight (Saturday mid-morning vs Sunday late afternoon), but some is real. The whole motorhome, rather than a chalky light tan color is now a slightly darker beige, and the whole thing actually looks wet! Even the window frames are no longer discolored and oxidized; they look new. From what I've read, washing the surface using a common car wash soap shouldn't harm the Red Max at all; not sure about whether wax is needed or not.
I was really impressed with how easy it went on. The best way to describe it is like "using a damp rag to wipe a layer of dust off the surface".
The very first coat, I got a significant amount of color "bleed" on the white rags when I got to the lower stripes. But with the second coat, I got absolutely none; the white rag stayed completely white. That tells me that the first coat had already sealed the surface. If the weather is nice, I'll probably go ahead with a 4th coat this next weekend, just for an extra layer of protection.
BTW, no problems at all on the metal painted cab. It, too, looks like new!