VP Racing 29505, Octanium Unleaded Octane Booster - Quart

This is safe to put my 2017 Subaru sti?

Will this work in my 2015 focus st?

It left sediment in my clear gas can after one week. Has anyone else had this issue. Can I just shake it up and use it?

Is it safe for an every day car? i’m just looking for something that will clean my fuel system and improves gas mileage. taurus sel 2011