We own a 2006 X trail and live on the prairies in Canada and when the temperature dips down, sometimes as low as -30 C there is a noticable oil leak on the driveway. It never leaks in the summer and it SEEMS to leak on startup in the colder days. Took it in to the dealer and found no leaks and informed us to warm the vehicle up for 30 minutes!!! Wow with the price of gas how much would this cost!! Also what they didn't consider is that it leaks when its warming up! Anyone have any ideas? Oil filter is tight and all gaskets are fine.