Functional PD-630 is a pour point depressant (PPD) engineered for exceptional performance in Group III oils. Each API oil Group (I, II, III) contains characteristic distributions of waxes that form gel at low temperature (-10 to -20C) and worsen the pour point of oil. PPDs interfere with the formation of this waxy gel and can extend the pour point to temperatures below -40C. The extreme hydrocracking used to produce Group III oils creates residual wax species unlike those in Group I or II oils.
It is best practice to choose a PPD that is best formulated to a particular base oil for maximum pour point reduction and lowest cost per treat. A Group III PPD is recommended when working with any formulation in Group III base oil. Group III PPDs also show good improvement in formulations with high VI improver content.