This is my first and only UOA of my 2016 Mazda 6 with the 2.5L skyactiv engine. I drive mostly in the city hwy which gives me the best mpg since being on the open road I tend to drive too fast to get the best mpg. I am using the dealer oil filter as well. This one was a japanese made tokyo roki but I was disappointed to find that Mazda is now using a Mexican and a Thai made filter now. This is also on the factory original air filter as well. I used the onboard MM and it still showed 50% oil life left I believe.I think the car only had 11k miles or so when I put this oil in so it was my 2nd oil change.