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Refining Used Lubricating Oils
book

Refining Used Lubricating Oils

by James Speight, Douglas I. Exall
April 2014
Intermediate to advanced content levelIntermediate to advanced
466 pages
17h 36m
English
CRC Press
Content preview from Refining Used Lubricating Oils
106 Refining Used Lubricating Oils
indicator changes color as soon as the acid is completely neutralized. Alternatively,
a potentiometric method may also be used.
The acid number test is performed on oil samples to quantify the acid buildup in
the oil—an increased acid number is a result of oxidation of the oil, perhaps caused
by overheating, overextended oil service, or water or air contamination. The acid
number limits for lubricating oils vary considerably—in some cases, an acid number
exceeding 0.05 is unacceptable, whereas in other cases, an acid number higher than
4.00 may be acceptable. As with all other readings, trend analysis is the best indica-
tion of the health of both the oil and the machinery.
The measurement of the base number (AS ...
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Publisher Resources

ISBN: 9781466551497