Many thanks Airspirit (and others)
That is exactly the type of detail I was looking for. I haven't owned a car in 20 odd years, and my bikes are all air-cooled, so coolant technology isn't something I keep up with very much...
Got plenty of local autoparts stores though, and most of them dread my coming in the door since I generally want to find a part for an application that isn't in their parts book

NAPA can deal with that pretty well, but it really makes the Autozone kids freak....
I've also got a good idea of where all the local pool supply places are, so sanitizer shouldn't be a problem either.
The Hyperlube sounds like it's mostly just an issue of checking different places to find one that carries it. (There are no Kragen's in this area AFAIK, but there are lots of other chains...)Per the website, it looks like mostly a Left Coast thing, but if I can't find it, then I can at least get it online from them.
Gooserider