I purchased a used 2008 CTS 3.6L with 110,000 miles. Previous records show this car was serviced every 5,000 miles at the dealer. I have done oil analysis on both of the oil changes to make sure nothing is wrong. Both reports have shown fuel dilution. I do use the remote start and the car does idle quite a bit. I am using Kendall full synthetic 5W30 and a Napa Gold filter made by Wix. Latest oil analysis is attached. Anybody else seen this?