Today I went to the dealership for my first oil change because I could not find 0w-20 motor oil in any auto parts store here in the city. I checked in about 6 or 7 auto parts store and found nothing so I gave up and just took it in to my local dealership. The service adviser told me that it would be 59.99 to which I replied "why?" I then continued to say that oil changes for my sedan were 27 bucks and it was with synthetic oil so why is this oil change so expensive. He said because the car requires a zero weight oil and that I won't be able to find it at any auto parts store in the city for a while. I then asked him what if I put "regular weight" oil in the engine since its the same engine as my old car and of course he hit me with the "catastrophic things will happen to the engine that will not be covered by warranty" line. I figured to just do it anyway since I need an oil change and I don't know anything about oil. I just wanna know is there any truth to what he's saying regarding the zero weight oil? Would I mess up the engine by putting anything but 0w-20? Has anyone put any other weight oil in their car and gotten problems?