Chemistry and Technology of Fuels and Oils, Vol. 45, No. 4, 2009
COLLOIDAL STABILITY OF MOTOR OILS DURING PROLONGED STORAGE
S. D. Likhterov, A. V. Antonenko, O. I. Kirillova, and
T. V. Markova
Federal State Establishment “Scientific-Research Institute of Storage Problems of Russian Reserves”
(FSE SRISP “Rosrezerva”). Translated from Khimiya i Tekhnologiya Topliv i Masel, No.4, pp. 15 – 17,
July – August, 2009.
0009-3092/09/4504–0237 © 2009 Springer Science+Business Media, Inc.
Samples of motor oil M-10G
k taken from various producer plants are investigated to determine the
dispersivity of calcium-containing, detergent-dispersing additives. Results of the investigation are used
for comparative evaluation of the physical stability of oils during storage. The feasibility of improving
the dispersivity of the compositions of additives in lube oils is demonstrated with use of a specially
The in-service effectiveness of motor oils is ensured, as a rule, by the various functional additives that
are contained in them. Detergent-dispersing additives, which are colloidal dispersions primarily of calcium
Fig. 1. For determination of exponent n of dispersivity for M-10G
k lube-oil samples:
1) y = -4.7x + 12.8; 2) y = -5.7x + 15.2; 3) y = -6.7x + 17.9.