haha i guess if they mess up your haircut worst thing that can happen is you shave your head and it grows back. But yea, most of the lude motors are different when it comes to oil as far as how much they take then the avg. 4cyl motor, so if possible, its best to do it on your own. Fastball, youre lucky to have gotten away with just that, I know someone who went to one of those places, and they did something worse. They changed the oil filter, and the little gasket from the old one was still on there, and of course the new one had a gasket as well, and they just put it over, and it cause it to leak oil, lucky he found out by noticing the oil under his car/low oil level when he got home. Had he gone on a long drive , engine couldve been toast.