u/BakeOrganic3904

i bought a 04 525d as a daily, i was never the type to search for strange noises as didn’t give me any issues, i change my oil at 7-8k km with quality Liqui Moly 5-40 as the car is older and has some mileage however

i came across this strange noise, it comes from where i pointed my finger in the video

i’m concerned if it’s the timing chain
if i rev the engine any sound disappears

any recommendations are welcome!