I bought the 4.8 a few months ago obviously not knowing when the last oil change was performed I asked my best friend to take care if it at his shop. That same day I started hearing this noise on start up, I can't remember what oil weight he used now but I did research it then and it was what was recommend, also used a OEM filter. Well now I'm kinda getting annoyed every time I hear it. It only last for a couple minutes then it goes away. Please watch the video and let me what you think.

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