Oil System 71
Sampling Examples
A new engine has a tendency to indicate
high iron (Fe), lead (Pb) and copper (Cu)
content during breaking in. Any left-over
particles from the manufacturing process
(foundry sand, machining filings, etc.) in-
crease wear at this stage. Wear at this point
should not cause any alarm as higher wear
particle values nearly always show up dur-
ing the breaking in period. Wait to see
whether the second and third oil analyses
give any indication that the particle levels
have changed to any extent.
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