True, and they have also been known to make mistakes. Optimum took the label from their smaller bottles, and simply made them bigger and put them on the gallon bottles. This made the number of capfuls dilution instructions incorrect as the cap on the gallon bottles actually holds *less* liquid than the caps on the quart bottles.
As much as I normally am one to follow directions (and I really am), sometimes you just gotta use your head and ask yourself if it makes sense. Honestly, does it make sense to use a less lubricated dilution ratio as a *clay lube* than for QD'ing? In which application (QD'ing or claying) would you want *more* lubrication than the other? Clay lubing, obviously. OK, which dilution ratio would give you that extra lubrication? If the directions don't make sense, just think it through a bit...
However, if you guys are getting no marring at the lesser dilution, that's great. I'm gonna spend the extra money on a bit higher concentration, though. I really think they did a typo, and meant to have the higer strength recipe be the clay lube, and the lesser for QD. Who knows, maybe some day they'll fix it and the correct capfuls for the gallon jug.