What the meanig of «Mass content of active elements (Ca, Zn, Mg, P)»?
Mass content of active elements is an indicator characterizing the level of alloying of oils with anti-wear, extreme pressure, detergent and dispersing as well as other additives.
Calcium (Ca) is found in oils as detergent agent. These are the most common additives found in almost all engine oils. The most common additives are calcium sulfonates. These compounds have the function of neutralizing acids formed in the oil during engine operation.
Zinc (Zn) is an element of the most common zinc dialkyldithiophosphate additive, which has anti-wear and anti-corrosion functions and is a secondary antioxidant.
Magnesium (Mg) is present in oils as a component of detergent and dispersant additives, for example, magnesium sulfonate or magnesium salicylates, and it also acts as an antioxidant.
Phosphorus (P) is an element of the most common zinc dialkyldithiophosphate additive. The content of phosphorus in modern engine oils is limited due to the harmful effects of their combustion products on aftertreatment devices of exhaust gases (catalyst, particle filters).