Hi All - I recently changed the oil in my new BMW X5 4.4 at 3K miles. Factory recommendaion is 5W30. I didn't do a UOA on it then as I figuered I wouldn't be getting an accurate UOA on the first oil in the car. Oil I changed out in the car was Redline 5W30. Thinking about using the same for the next change or possibly amsoil or gc. It's almost at 6K now, and before I know it, it will be winter out here in NYC.What do ya'll suggest. Wait it out until the car hit's 8K and then change the oil out and do a UOA. Or change the oil in the car before the winter and get a UOA.