Major drivers that influence the performance requirements and chemistry of modern automotive lubricant additive formulations include fuel economy, durability and emissions. The identification of chemistries designed to improve one aspect of performance without degrading one or more of the others, while at the same time meeting all regulatory requirements within a shrinking space in the periodic table, creates particularly challenging formulation problems. As a consequence, modern lubricant additives must effectively produce surface active species that allow efficient operation under the harsh rheological constraints of metal surface/fluid interfacial boundary conditions.

Trends in lubricant additive chemistry: Working under boundary conditions

249th National Meeting (2015)

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