I am impressed by Pennzoil's cold cranking and MRV numbers on the website. They are quite low and they base some of them at -40 Celsius and the others -35, except 10w30 at -30. I guess a lower pour point in some oils does not equate to lower cold cranking and mini-rotary viscosity numbers. Pennzoil's pour points are not great. On a general note...if I had one wish for Ground Hog Day, I wish all the oil companies used an extensive technical data sheet like Schaeffer does.