Thanks for all the info and responses! I had figured it wasn't safe to run the 87 octane in the car cuz it would ultimately blow a pistion or something like that. I don't mind haveing to fill my turbo legacy with premium in fact it is prefrence for me anyways. the car is my daily driver and so far on every fill up i've gotten no less then 23 mpg. beside regular 87 octane is about only about a 10 or 20 cent diffrence per gallon the premieum in most of the country right now.