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Reply to "Nitration in Hyd fluid"

Dear Jim,

UC level 4 is marginal (begining of alert)
I am advising you to combine with other analysis i.e:
* ASTM 1500 Color code. If it is more than 5, varnish buildup shall be considered
* Varnish Potential Analysis (http://machinerylubrication.com/Read/1027/varnish-potential-analysis)
* and combine also with system monitoring data, like the trend of oil filter delta pressure (DP). the increase of DP from 0.3 reach to 1 bar below 6 months is indicating something wrong in the oil.

Normal or not is your decission.
The lab is just analyzing the available parameter.

Regards
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