I’m not sure if it’s all the new mustangs that develop a tick immediately after your first oil change. I’m wondering if the motorcraft 5w50 oil helped out with having no ticking. The engine sounds clean and smooth as it should. I’ve changed the oil at 44xx for the first change anticipating the whipple install being done next weekend. I’ll show more reviews on the s650 after next week once the supercharger is installed.