Im hearing a clank under my car when I turn off the engine and parked it. It sound like a water hitting a thin metal, or a thin metal to metal sound. The sound seems originating near the middle, which is muffler. The sound has like 1 second interval, then the interval increases the longer the car is parked. Until it stops completely.

Ano kaya ito? My car is a 2 and a half month old vios with 4.1k on its odo. Im planning to report it to casa on my 5k pms. Right now id be more vigilant in checking my oil and water.