![]() ![]() Special additives impart specific properties to certain types of lubricants. ![]() Primary additives are employed in the most frequently used groups of lubricating oils-for example, automotive oils. Hence, additives may be classified as-primary and special. The type of additive determines the importance and extent of its application. The performance of lubricating oils is classified according to the effects of base oil and additives respectively. Additives can be defined as substances that improve the performance of lubricants-either by imparting new properties to a base oil or grease, or by enhancing properties already present. ![]()
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