Engine Mechanical problem
2003 Audi Quattro 6 cyl All Wheel Drive Automatic 78000 miles

I just bot audi A4 2003 3.0 L
When engine cold i can hear noise for 1 second on startup. I ask mechanic and they say that engione pumping oil, thats normal. Noise only when i start cold engine, nothing when i'm driving.
Can you please help me...
Thank you