I AM CURRENTLY USING HOUGHTON 419R WATER GLYCOL HYDRAULIC FLUID IN A 1000 GAL. RESERVOIR. REXROTH VARIABLE DISPLACEMENT AXIAL PISTON PUMPS HAVE BEEN FAILING PREMATURELY, ONE AFTER ONLY 120 HRS. OIL ANALYSIS REPORTS CONFIRM NO CONTAMINATION.REXROTH SAYS THE FLUID IS LOSING IT'S LUBRICITY. HOUGHTON SAY'S THE FLUID IS FINE. HOW CAN I TEST THIS FLUID FOR IT'S LUBRICATING PROPERTIES AND GET TO THE BOTTOM OF THIS FINGER POINTING MATCH?
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