Technical Paper
Compositional Analysis of Re-Refined and Non-Conventional Lubricant Base Oils: Correlations to Sequence VE and IIIE Gasoline Engine Tests
1994-10-01
941978
In 1993, a Presidential Executive Order was issued requiring that federal agencies purchase lubricants containing at least 25% re-refined base oil. In light of this initiative, we have undertaken a program to characterize the chemical composition of re-refined base stocks, provided by a number of manufacturers, using column chromatography coupled with mass spectrometry techniques. The hydrocarbon-type distribution observed for the re-refined oils provides an index of their relative quality when benchmarked against conventionally processed “virgin” and certain non-conventional, high viscosity index (VI) base oils.
