In a previous thread, i detailed how my 2009 Chrysler T&C consumed a quart of oil per 1k miles. The Chrysler 3.8 is noted for this pattern of consumption. Last OCI, consumption was reduced to about 1qt/2k miles using Pennz Ultra 10W/30. For the winter, i just changed to Pennz Platinum (GTL) 0W/20. I could not find Ultra in an 0W formulation. Consumption is at one quart in 623 miles! I am not sure if it is a difference between the Platinum/Ultra or the difference between the 0W/10W. Your thouhgts? I plan on running 10k OCIs because of the amount of top off oil, even at 1qt/2K miles. Currently using PYB 5W/30 for top offs between OCIs. If I reach 10k miles by this summer, I plan on running PYB 5w/30 one OCI to see how it performs in relation to consumption.