V70 D5 2.4 129kW/175PS 01/2010 kaufen? ZK/ZKD/Kühlwasserlose..?

Hello, after the old car has dropped off, we are faced with the decision to buy a Volvo V70 EZ01/2010 D5 2.4 129kW/175PS with 163,500 km and automatic transmission from private. The car is 3rd hand (1st was 7 months car rental, 2. a Dekra Ing., 3. my work colleague). Once a year he was at Volvo for inspection / oil change. Never been special. I have read a lot about the reliability here in the forum the last few days, but I am on the problem of cooling water leakage. t / cylinder head / ZKD pushed, as identical to the larger Bi-Turbo engines. Question: Is that really so?! Or were these only individual cases? Can I neglect this after 9 years and 163,500 km? My driving profile: 10,000 km per year (I don’t want a petrol engine); 3x the week 60 km (woman to horse), more often annually with 1700 kg caravan on holiday (2000 km…; retrofitted rigid AHK with double fan available), to work the bike. It should cost around 8,000 euros. Timing belts and the 4 tires in one year. TÜV/Inspection is still almost new. Would be happy to hear from you, thank you! Stefan