Prevent white carboxylate gelling buildup or black asphaltenes from reducing performance, decreasing part-life, and causing downstream malfunctioning.
Carboxylates are often added to reduce fuel drag in oil pipelines. On older or traditional diesel systems, 2-3 micron sized carboxylate deposits could be passed through injectors with little buildup and combusted. Modern HPCR engines have much smaller tolerances, and fuel has not kept pace causing rapid plugging on fuel filters and decreased performance/fuel economy.