I had gotten my oil changed earlier in the day , and when I walked out of the door after my shift at the newspaper I saw that my right rear tire was flat . This is not the first time I ' ve had a flat tire soon after an oil change ; I think I may call the oil change place Monday and complain . Anyway , it was nearly 5 p.m. on a Saturday .
According to the above context, answer the following question.
What happened before I noticed the flat tire ?


I went to work after getting my oil changed .