We had a hot summer - for Minnesota. I think we had a week or 10 days streak above 100, and then most of the days high 80s or low 90s. Of course this does not compare to the South - curious how other northern owners are doing. I suspect the oil level was probably at the top when I picked up the car, so I think there is some loss. All my other cars were V4 or V6, never had to add up oil between changes.