Well, yes they did change the oil. Paid the full price for full synthetic oil change . Incudes 5 q oil ,spin on oil filter, 21 point inspection , blah blah blah. I bought my own oil filter ( K& N ). I have been using since I bought the car. Don't care for theirs whatever they use. Being told that I can't do that. I said wait .Since your filter is included in the oil change I just want to save you the filter by using my own I purchased . Same with the oil plug. Every other oil change I do install a new one. I can't do that either being told. They have to sell me one. For how much ??? Oh for about 15 dollars. Did I say I paid 2 .49 retail at the parts store ??? Yes I'm a true believer of free enterprise, believer of making money" BUT" it must be logical. Things that make sense. Oh One last thing. Did I mentioned I never received the 21 point check up??