I did something dumb (hopefully only moderately dumb). I gassed up my '99 Boxster yesterday. I wasn't thinking and said to the guy to fill it up with regular. Our Volvo and Isuzu Trooper take regular so I am more tuned to getting that as opposed to premium. I didn't catch my mistake until I went to pay and wondered why it seemed low. That's when I looked at the pump and realized I had asked for regular.
I am assuming that no great harm will come to the car. However, I want to be sure. Any thoughts?