I have to get an oil change, and I thought I would buy the oil, since the dealer marks it up. But of course, it was no where to be found. The guy at pep boys said that 5W-40 is the same or better as 0W-40. Do you think this is true? And of course, they didn't have 5W-40 either. Do I bite the bullet and get raped at the dealer? By the way, what does an oil change (15,000 mi) run at the Chrysler dealer? I think I have to get the "B" service. Thanks guys.

Blake