^If your oil gets low, its because its leaking or your car is drinking it. You should fix that.
Original poster, Pull your valve cover off, and remove your upper timing chain guide at the front of the engine. Its the little piece that looks like its suppose to do good, and keep the chain from rattling around... well, it sucks.
If the problem still persists, there is another upper timing guide on the passenger side of the engine, near the top just under the intake cam sprocket that is also known to make noise.