First UOA on our Mazda6 that currently has 178k miles. This car runs like new and I've only had to change fluid, brake pads, and spark plugs. I did the first drain n fill on the transmission at 160k, I was going to test this lifetime fill concept but I caved. No issues with transmission so far. Still going strong and idles smooth. Bought the Mazda on a whim in 2016 but this car has made me a believer in their brand.