u/Rilderdjut

So in Juli i bought my 740 and in August in September i did an Oil change but for some reason after i changed the Oil (Liqui Moly Synthoil High Tech 5W40) My Volvo makes these wierd knocking noises when cold but after some driving when the Engine is Warm its gone ?

what could e the reason ?
sadly i dont know what Oil was in it before