Has it been successful for most or nothing but nerve racking anticipation or "if it ain't broke, don't fix it? A number of you have mentioned it has a horror. Is it? Do I have to interview all the chevy dealers? Is it that much different an oil change than in other cars? How many miles did those of you have when having did the first change? What was the %oil life? Currently, I have 1080 miles, got it Feb, 2014 and I have 33% oil life. Is it time for me to change it? Thoughts?