Ok, so I just got my first oil change with my new car. I went to a place and I told them I wanted synthetic oil, the best they've got, and they said ok. So I look on the sheet they gave me "Mobile 1 10W30". I read on the oil guide that 10W30 is not good for my engine becuase it don't have enough pressure or somthing. I drove home with it and it seemed fine, do you think my car is at risk?