The gentleman that helped me was very knowledgeable. I had bought my windshield wipers a few weeks ago. I didn’t have my car at that time because I was also replacing my thermostat. He swapped out one of my windshield wipers that didn’t fit without any hassel. He also used the machine to find out Why my «check engine light» was lit. He gave a reason for each code and cleared them out. I am a retail manager and I value service like he provided.