Hello together, when I was standing next to my XC90D5 the other day, since my wife had once again taken hold of it, the engine sounded quite unhealthy after starting. The V-belt whistled a little and it sounded as if the parts of the engine had to look for their place. After one-of-a-kind gassing the spook was for the most part over. Even after starting the warm engine it purrs like a kitten. In my former V70D5 I never had such an effect. Now my question: normal, unhealthy? Greetings bkpaul