With the increase in use it has become imperative that lubrication issues be addressed. The oil industry has tried to address some of the problems with the use of additives. Viscosity increase has been counteracted with the addition of Zinc Dithiophosphates and ashless oxidation inhibitors. Engine wear has resulted in the addition of wear inhibitors, metallic detergents, and Zinc Dithiophosphates, while engine deposits reduction requires the minimization of ashless dispersants and metallic detergents. Other issues such as catalyst phosphate contamination from engine oil are also areas of concern.
Presentation is in outline format.
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