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LUBE-TRIVIA
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QUESTION: Name common ways
an engine oil degrades. What is a general indicator to
change the oil? |
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ANSWER: Oxidation,
nitration,
loss of additive effectiveness,
change in oil viscosity,
contamination by fuel or coolants,
engine wear causing acid build build-up from combustion by-products.
Indicator: When the BN (Base Number) is less
than half the new oil value. |
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This Lube-Trivia is one of more than 440
questions
in
Noria's Preparatory Flash Cards for the
ICML
Level I Machinery Lubricant Analyst (MLA I) certification.
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Motor Oil Selection Guide |
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