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Reply to "Filtration of Synthetic Polyglycol Oils ( ISO VG 320)"

I use to work with PAG fluids a lot and so have Eric Levit(IAS)and Scott Howard (Hypro). I can tell you that PAG fluids are stable in water even at 30%. We had a customer running it for 5 months from 2 cooler leaks and when we vacuumed the water out of the fluid the fluid tested at new levels again. Just because the fluid gets to 15000 ppm of water does not mean it needs to be changed. My suggestion is to vacuum dehydrate then test the fluid. More than likely the fluid will be good and if so, continue to use it.
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