Pour Point Depressant Selection for Todays Engine Oils Aged in the Presence of Biodiesel by CEC L-105

摘要

1. Multiple low temperature test requirements require careful PPD selection 1.1 The addition of the CEC L-105 acids to the challenge 2. This study of the CEC L-105 test shows 2.1 PPDs found suitable in the fresh oil may not be acceptable in the oil after CEC L-105 oxidation 2.2 Components influence the PPD selection 2.2.1 Ⅶ choice has large influence on CEC L-105 aged oil viscosity 2.3 Careful selection of the PPD will result in passing the CEC L-105 viscosity challenge.