There is no uniform international standard for nursing products, so there is no recognized authoritative criterion to determine which additive is true and which is false. For the vast number of users, the only feasible way to identify is to refer to the performance test method of oil, which is introduced as follows:
1. A certain proportion of Antiwear Ep Additive was added to a certain oil product, and then the detergent and dispersant (Detergent and Dispersant Additive ), Antioxidation additive and Anticorrosion properties of the oil were analyzed. If it is worse than the original oil, even if the antiwear effect of the Antiwear Additive is better, it will affect the other properties of the oil, which is not available. This discriminant method is more scientific and convincing for users with analysis conditions.
2. If the heating antiwear additive can't withstand high temperature, obvious blackening, odor, stratification and so on, its effect is limited, it's not suitable for choose. 3. When antiwear additive are stirred or heated with a small amount of water, white powders will precipitate during a period of time. These additive is better and can be used.
4. Chlorinated paraffins and thienes have proved to be unavailable in engine oils. If elemental analysis of antiwear agents is carried out, the content of chlorine or sulfur elements is too high, these agents are unavailable. 5. The most clumsy and practical method is to try it out. The effect of adding antiwear additive to engine oil is not obvious after using it for a period of time. Of course, it will not be considered for use.
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