13,000 miles on my first run of Amsoil signature series ASL 5w30 in my trifecta tuned cruze 1.4T, I did have a can of liqui moly motor oil saver in this fill, which worked great for my small seep and explains part of the viscosity deviation that I didn't mention to the lab . Ran pretty hard with lots of idle time for a full year, avg mpg over OCI was 21.7 mpg