97 eclipse gst

new to forum first thread and most likely wont be my last. i recently bought a 97 eclipse gst on the cars dashboard it says only premium gasoline i dont think the previous owners used premium but used plus which i have been using since ive bought it. how important is premium to this car and if not used will affect the way the car runs??

Since your turbo, you need to use atleast 91 octane. You can apply whatever name you want to it such as "premium" or "plus", but look at the octane rating. If it's less than 91, don't put it into your car. It's important. It will affect the way it runs.

Its very important as in it could cost you a motor.

It will affect the way it runs.
Or if it runs at all. I always use 92 for sure and if I am on that end of town, theres one station that carries 93.