I know the owners manual says to use 91 or higher with the 2.0 engine. It also says that you can use 87 octane. I’ve just started using 87 after 1500 miles and I’m finding I get better gas mileage with using 87. So far I’ve encountered no issues with 87. So my question is what octane is everyone using and do you see improved mileage using 87 or any issues using 87?