Subaru impreza boxer diesel engine oil loss

Hello. I’m new here in the community! Have bought me in dezember 2018 a subaru impreza hatchback 2.0 tdi boxer AWD 150 ps. Year of construction 2010 186000 km running power. DPF was removed. Anyway, I made a service. All filters changed and motor oil changed. 2 weeks later the engine starts to lose oil. The simmering between engine and coupling was changed. It was found that the crankshaft has a game all around. The subaru dealer meant I should to look around a complete replacement engine. Unfortunately, I haven’t found anything suitable yet. On 700 km the impreza needs about 0.5 l oil. I used a 5w30 motor oil for subaru. Is there somewhere a subaru motor dealer? Or something like that? I’m from Upper Austria.