I understand the point of using SL CL in place of ink for head fluid fulfillment in certain situations, as I am set up minus white, gloss or primer in positions 5&6 (see earlier pic). I chose this configuration day one with the Roland Installation Tech, as I print only black lettering as a substitute process of what was a Screen Printing of characters on Electronic Panels that I manufacture. Taking white (with its own settling / hardening / clogging) issues out of the equation seemed like a major plus as well.
As far as being a "Cleaner", SL CL is the only chemical of choice for Head Refreshing, so I don't follow the no cleaner mystique being relayed here. Know what I mean?