I have not had my oil changed in 45 years, I have always done it myself since I was 16. But I just bought a new Ford Fusion that I have been talking about here on BITOG and it came with a year (five oil changes max) worth of free oil changes. I took it in for the first change at 1,000 miles and watched the process from outside the shop and it seemd fine. The car was driven over to the other side of the dealer for me to pick up. About 10 minutes later I checked the oil when I was going to leave and it was a quart low! I went back and told the service guy and he said it held 4.5 quarts and that was what he put in. He showed me on his laptop in the capacities section and he was surprised to see it really held 5.3 qts.so he added another quart and that brought it to full. He said he and the other shop guys have been putting in 4.5. I wonder how many they have changed like that.