VOLATILES CONTAMINANTS IN USED ENGINE OILS: ASTM D3607
EXPLANATION
The removal of volatile materials such as gasoline dilution from used engine oils is especially important if the mechanical shear stability or oxidative stability of the oil is being monitored by measuring a kinematic viscosity change in the oil after it has been used in a gasoline engine. This test method describes a standardized procedure for removing these volatile materials from used engine oils prior to further oil analysis. It also provides an estimate of such volatiles in used engine oils.
TEST SUMMARY
A known weight of sample is heated to 90° C under a nitrogen flow for 4.5 h, cooled, and reweighed.
TEST PRECISION
Repeatability: 0.27 mass %
Reproducibility: 1.40 mass %
There is no bias.
