Hello guys, yesterday a Volvo locksmith told me about the problem with the hydro-pumps. I didn’t have the Xc 70 D5 mj 2005 until Friday, should the car become my wife and my little daughter. The noise from the oil cover becomes very quiet when I fold off the rubber hose of the vacuum pump, engine damage or vacuum problem? https://youtu.be/_Wj_mwoGDv8 Otherwise it runs completely normal and has from 1600 u/min full power.