BMW 218d Engine Noise Difference with Oil Change

Engine noise difference before and after the oil change.
Oil: amzn.to/2KvYXou

[@salimmetin]

The position of the camera so, the microphone is not at the same place and once the engine is started before flush, it is cold and at second run after flushing the engine did run couple of minutes.. that might be the difference in sound. I'm not sure if the flushing engine is a good idea..?

[@7K2LGO]

Thank you for your comment. Your are absolutely correct on accuracy. I just did not need to pursuit that much accuracy for this since youtube sound quality is not really that level, but I wanted to share the difference that I actually "feel" the difference on harmony from my experience on 5 years of every day drive and as a musician. The video represents the different harmony feel on musicians' ears that you may not care. BTW, I wonder how you assume the engine was cold before flush. I actually set engine almost same water temp (89C) on OBD2. That's fine I did not mention it, so you had to assume the way you believe. That is my fault. Anyway, if you require that high level comparison on the sound difference, I am not here to serve for you and please find someone else to pursuit and discuss further to meet your requirements. I do not know if the flushing engine is bad, but I have to flush oil first to put new oil in. I may not understand what you really meant. I just followed BMW official repair instruction. Again, thank you for taking time to leave your comment and I apologize my video clip was poorly made for your expectation.