I'm a poster from Ottawa, Ontario. I recently fininshed a 9k-mile run of 'Maximum' 5W-30 dino in my '02 Cavalier. Of all the oils I've used in this car (a lot), this oil had the lowest consumption by far - 1/2 liter in the 9k miles. It also stayed 'clean looking' (not scientific, I know) longer than other oils. I didn't use it during the winter, but on paper, PC oils have the LOWEST cranking and pumping numbers you will find of ANY conventional oil on the shelf.
Now, this may be misleading as right on their pages, PC states their base oils are a mix of group II and III oils, so this oil is most likely actually a blend in composition. Still an excellent oil, as all PC oils are. The 'pros' on here - Terry, Johnny, and others - have all said PC produces some of the best oils on the market.
One problem is the ARE somewhat hard to get, especially at 'reasonable' prices. If you buy in bulk, they are okay, but for small quantities, you have to go to a gas station and pay thier prices....