I drive a truck for a living, driving, and maintenance on a diesel is different than the gasoline predecessor! My Ecodiesel recently went through a cycle where I had a loss of mileage and then it regained it back. Just a weird little cycle of some sort, I didn't freak out and start adding all kinds of additives thinking something was rawng! I have seen this on Youtube videos, I'm not knocking anyone for how they take care of their own vehicle, I just take a different approach, That and I am cheap! Some of those additives are expensive! Good luck to everyone here, and just remember were all in this together! Thanks for the welcome Les!Welcome, Leo. I have a 2018 with over 10K now and so far so good. Have to admit, I feel a little like I am playing Russian roulette. That said, bought extended warranty and hoping that was a waste. again, welcome.