I never tested mine from the factory, the first time I did it was after a dealer change so these guys may be right. When reinstalling the filter make sure you take some oil and rub it on top of the filter, the rubber ring. It is very important. I also rub it on the metal threads before screwing the new filter. and also 5w20, and read synthetic oil thread for good choices. have 8 qrts on hand, and check it after 7. If you emptied the pan and the filter was replaced, you wont be over filled at 7qrts, no chance. Get a synthetic filter if you plan on going 10k between oil changes. Royal Purple Filters are a great choice and there are others as well.