I'm sure he thins it before he mixes so he doesn't lose any flavor.Switch posted that he uses 25% distilled water. Seems like a lot to me. I thin mine before I use it to mix but I do mine at around 15%. I find the viscosity very close to PG at that mixture and have no soaking problems. If I can get weeks of use out of a carto I guess it's not gunking up coils too bad either.