TANDELTA OQSExISG2, Руководство пользователя

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Figure 82 - Oil Change Carried Out Correctly
If the TDN value does not return exactly to the same point expected of a new clean oil (2),
then it is likely that there was some residual amount of used oil remaining in the system which
has mixed with the new clean oil.
Figure 83 - Oil Change Not Carried Out Correctly
Small linear improvements in the TDN value are not expected to be seen in normal operation
and are not indicative of a contamination event, therefore a linear increase in oil condition in
a shorter time scale (3) would validate an oil top-up intervention.
(1)
(1)
(2)