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Additives Control Lubricant Viscosity and Provide More Consistent Performance

Posted by Jobylyn Pineda on Apr 14, 2016, 10:47:38 AM

In General Information, viscosity, Oil Viscosity

Valvoline has recently launched a pressure-activated cobalt grease that can protect engine parts from damage especially in high temperature environments. The purpose of the grease is to provide a continuous film between moving parts under pressure. Normally under high temperature, the friction between moving parts and the lubricant reduces the viscosity of the film, potentially resulting in metal-to-metal contact. Valvoline’s cobalt grease employs a lithium sulfonate complex thickening system that is effective in dissipating heat and preventing corrosion in extreme conditions.

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Fast and accurate viscosity characterization is requiredto test the performance of new additives (i.e., lithium sulfonate) that reduce the viscosity’s temperature dependence of lubricants.

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