Why would your car not steer anymore and why would it leak oil all over the engine and make a noise like a lawn mower?

Sounds like you have a serious Power Steering pump problem and most likely a bad leak. You need to have it looked at and probably relace the power steering pump, belt and possibly the hoses.. if you have driven it much since it started sounding "LIKE A LAWNMOWER". If you are lucky...find the leak and stop it. Replace the fluid...maybe..just maybe it will work for awhile. Good Luck. John In Montana