Number of years ago I bought a car with all my summer earnings between years of college. Guy said he had just done an oil change, and I remember him saying the filter is one of the most common GM filters, a PF47. This statement is true. It was a very common filter. Too bad he put the wrong dang one on there. Can't say he didn't know better. Thank goodness the little bugger hung on during the ride home, about 20 miles. Went out the next morning and was greeted by a huge puddle of oil. The filter fell off and was on the subframe. I completed my first oil change on that car and it was great after that. Stomach jumped into my throat when I saw the oil slick on the floor of the garage, was never so happy when I found out it was just an incorrect filter used.