Estimation of engine oil volatility by capillary
gas chromatography - Test method
(First revision)
1.1 This test method covers an estimation of the amount of
engine oil volatilized at 371 °C (700 °F).
1.1.1 This test method can also be used to estimate the
amount of oil volatilized at any temperature between 126 °C
and 371 °C, if so desired.
1.2 This test method is limited to samples having an initial
boiling point (IBP) greater than 126 °C (259 °F) or the first
calibration point and to samples containing lubricant base oils
with end points less than 615 °C (1139 °F) or the last
n-paraffins in the calibration mixture. By using some instruments
and columns, it is possible to extend the useful range of
the test method.
1.3 This test method uses the principles of simulated distillation
methodology.
1.4 This test method may be applied to both lubricant oil
base stocks and finished lubricants containing additive packages.
These additive packages generally contain high molecular
weight, nonvolatile components that do not elute from the
chromatographic column under the test conditions. The calculation
procedure used in this test method assumes that all of the
sample elutes from the column and is detected with uniform
response. This assumption is not true for samples with nonvolatile
additives, and application of this test method under
such conditions will yield results higher than expected. For this
reason, results by this test method are reported as area percent
of oil.
1.5 The values stated in SI units are to be regarded as
standard. The values stated in inch-pound units are provided
for information only.
1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appropriate
safety and health practices and determine the applicability
of regulatory limitations prior to use.
