Diluted, not diluted, concentrated.... which one you use and the time to
clean / descale (which is actually a type of cleaning no matter what we
wish to call it), all depends on several factors, one being how dirty /
crusty your machine is to begin with. Can every machine be opened up
and inspected to actually see the amount of grunge built up? With this,
concentrations of cleaning solutions are a crap shoot to begin with. So
do we go with the school of nuke it, even if it didn't need x amount of
cleaner, were gonna make sure that baby is clean or just try some, and
if it's not enough, go for more etc. Isn't adding water to it diluting it?
Again, you emphatically mentioned vinegar you'll NEVER use vinegar,
besides for a personal choice you made it sound like there was something
very bad about using vinegar.... what would that be... or was that just
an emphasis on your personal preferences.
Also for what it's worth, those unsweetened Kool Aid packages are pretty
much nothing more than citric acid, some artificial flavoring, and some
coloring. They run about 40 cents a pack sometimes a lot cheaper. Get
some lemon or lime ones that are not really colored, and throw one of
those in for your cit acid, will work just the same. We used to use it
in the navy all the time and it cleaned brass / aluminum / steel very
very well.... and to think we drank that stuff too... ugh.
Oh, and not everyone has a brewers supply store nearby either, so might
need to order that off the internet and add a few more dollars for
shipping and handling on the cit acid.