Well I thought I lucked out with my 2020 gt, 3800 miles and no tick..pulled it out of the garage from winter storage and took it to the dealer yesterday for state inspection and it's 1st oil change. Didn't notice any noise on the drive home so I thought I was in the clear. I'm at work this evening and my wife calls me ask if I hit something or left something under the hood, said she hears what sounds like a quarter bouncing against the hood on light acceleration...I immediately knew what it was :( I came home started the car and after warm up..tick tick tick..hoped in drove to advanced auto they didn't have any certec but had luqui moly Mos2. I put a bottle of that in, drove home and still have a tick here and there but it has helped tremendously. It goes this Saturday to get the headers put on so hopefully the loudness will just drown it out.