V70 L 2.5TDI Start problem

Moin. My Eckiger colleague who scolds himself V70 2.5TDI engine code AEL makes me a bit worried. When I come home in the evening and the car stands about 8 hours. Even if it is nice and warm in the sun the next day, the starter likes to spin 10 seconds until one of the 5 pötten gives the impetus and the engine starts to run. The engine needs as good as no oil and has 483,000 down. Once it was off and has cooled down again after approx. 3 hours then it jumps sof I hope someone can help me. If someone needs to hear how he starts, I can send an audio if someone sends me his number via WhatsApp. Thanks and greeting to all moose friends