After any drive in my '18, when I come to a stop with the windows closed and vent fan running I smell an oil burning smell, very distinctive if you've been around cars enough. It's like the oil smell isn't around as you're cruising but when you come to a stop the vapour gets sucked into the intake grid for the cabin air. I believe this started around the 6000K mark and then I had an oil change and the smell continued. I took it back and had them look at it and the mechanic thinks it's from that shock absorber thing attached to the idler tensioner pulley(and blowing back when moving) and he showed me some leaking from there. I do remember my '14 Z51 having a bit of a leak from there but it never smelled of burning oil and I don't think that a small leak like that could keep on smelling as eventually it would empty out. Any other Zed06 owners notice this situation? I'm going to get it in to my closer GM dealer soon to have them look closer as I think this would be a warranty issue.