The application of synthetic fluids to automotive lubricant development: Trends today and tomorrow

Abstract

Engineering design of the internal combustion engine is under a constant state of evolution which has been driven by many factors. These design changes have led to higher performance requirements from the lubricant, e.g. greater resistance to thermal and oxidative degradation, improved deposit and sludge control, and increased control of volatility. Mineralbased lubricants have traditionally proved successful for the vast majority of automotive applications. The current advances have stretched such products to the limit of their capabilities. In such areas, it has been found that synthetic lubricants offer benefits far outweighing their higher costs, providing clearcut performance benefits for the modern generation of higher‐performance vehicles. The current state of the art is reviewed from both application and chemical standpoints, and future trends are projected in the light of ongoing developments.

Evaluation of oxidation-mediated volatility of hydrocarbon lubricant base fluids

“…An alternate test method is gas chromatographic distillation (GCD) (ASTM D2887) [24]. Although there are differences of opinion concerning the correlation of oil volatility and oil consumption [25][26][27], the measurement of volatility has become a part of the testing regime.…”