Polyisobutylene succinimide for use as a dispersant in engine oil, as a dispersant in gear oil, as a dispersant in ink pigments, use as a detergent additive in fuels, as an asphaltene inhibitor in oilfield-drilling processes, as an asphaltene inhibitor in oilfield-completion processes, as an asphaltene inhibitor in oilfield-production processes, as an emulsifier in the further manufacture of explosives, as an emulsifier in oilfield-drilling operations, as an emulsifier in oil-manufacturing pr...