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Reply to "TAN is dropping"

Hi Hal,
I don't think it will be critical change, I think track the ISO 4406 particle count and PQ and if they remain steady I would expect the rate of wear will be low, ISO Pct would want to be ISO 16/13- to 17/13 for a low rate of wear, any more elevated I would inclined to check by microscope what the particles are.
What was the base line for PQ when the lubricant was new?
ReAgards
Rob S
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