Hello forum, I'm looking for any random tidbits of advise anybody might have regarding the transition to a machine using through-spindle coolant. We have it on order so I'm buying supplies at the moment.

Thus far I've heard a lot of advise about keeping the coolant concentration better in check. A friend of mine suggested running a higher concentration in the tank because it was better on the spindle's coolant coupling, but I was wondering if the higher concentration would lead to foaming.
(I don't play around with the concentrations much since what we have does the job, so I only know enough to be dangerous there)

Prior to now we don't really monitor the coolant quality, rather just "play it by ear". I have an optical refractometer at home so I figure I can use that to start.

Thanks for any info!