From a Oronite Paper (may have been posted before?)
Quote:
SUMMARY - It can be concluded that a judgment of
the quality of a lubricant, and especially it’s capabilities
for use as an extended service interval oil, cannot be
based solely on the TBN measurements. Several other
used oil characteristics need to be taken into account to
come to the correct conclusions. In the next sections,
the results of some bench test work,, triggered by ourthe
field test observations, will be discussed.
This paper offers some observations from a field
test, showing that some detergent approaches gave
unacceptable performance even though the TBNs were
at an acceptable level. It is hypothesized that some
detergents do not effectively neutralize all acidic species
present in the lubricant, and thereby thus reservinge
their own base, which shows up as TBN, while in fact
the oil may no longernot provide sufficient any protection
against bearing corrosion.
Quote:
Although the TBN
measurementss are informative, easy, and quick, it can
be misleading to base the judgment of an oil’s
performance solely on onethis one criteriona.
Quote:
www.oil-lab.com/downloads/TBN-1.pdf
Quote:
SUMMARY - It can be concluded that a judgment of
the quality of a lubricant, and especially it’s capabilities
for use as an extended service interval oil, cannot be
based solely on the TBN measurements. Several other
used oil characteristics need to be taken into account to
come to the correct conclusions. In the next sections,
the results of some bench test work,, triggered by ourthe
field test observations, will be discussed.
This paper offers some observations from a field
test, showing that some detergent approaches gave
unacceptable performance even though the TBNs were
at an acceptable level. It is hypothesized that some
detergents do not effectively neutralize all acidic species
present in the lubricant, and thereby thus reservinge
their own base, which shows up as TBN, while in fact
the oil may no longernot provide sufficient any protection
against bearing corrosion.
Quote:
Although the TBN
measurementss are informative, easy, and quick, it can
be misleading to base the judgment of an oil’s
performance solely on onethis one criteriona.
Quote:
www.oil-lab.com/downloads/TBN-1.pdf
