I pulled the data sheets off the web sites today and I'm trying to match up Citgo's terminology with Chevron's to compare their 5W30 and 10W30 conventional oils. Chevron lists "Pour Point" in degrees C and F. Citgo doesn't list a "Pour Point." Is their "Low-Temperature Pumping, ASTM D 4684" the same thing? In this section, Citgo has values for Temp (C and F), Viscosity in cP, and Yield Stress in Pa. I was disappointed to see Chevron include some data that Citgo doesn't, and vice versa. This makes a virgin comparison a bit tougher.