Hey all I recently bought a 2005, 6spd, RWD, with 117k on the clock. After driving for a couple days the low oil pressure light came on when I would be at Idle. So I checked and there was almost no oil at all.....this is maybe 4 days after buying the car and there prior to buying the car the dipstick measured approximately somewhere in the middle of full and empty. So I filled it with oil, took it a couple days later to the Nissan dealership for a oil change. Technician said the drain bolt was loose so I contributed the oil loss to that. Well after commuting about 5 days the light came on again...I checked and almost no oil!!! So I refilled and prepared for the worst. On the way to my local mechanic to have some diagnostic work my wife told me the car was smoking white smoke almost the entire time and took a video of it. Sure enough my mechanic said he is 90% sure the main bearing is bad and its just a matter of time before the main bearing spins. I'm at a loss as to I can't believe that this would happen. Anyone with any other experiences with this? He said it was not a simple procedure and that I would be better off in selling the car.