Hey everyone,

First of all I would like to thank you for your help and patience

Secondly I wanted to record what was the problem for somebody who might be having a similar in the future as a reference. So cut long story short - the problem was 1) in the radiator - if I understood the mechanic correctly oil got in and damaged the rubber stuff inside the radiator and that stuff started to circulate and the coolant couldn't circulate properly. Another problem was that the radiator wouldn't switch the second speed on, so the mechanic has installed some kind of double sensor ensuring the radiator will turn on even if one sensor won't pick it up. And that's about it - using second hand parts the final price was a little over $700. Well it's a lot, but at least it's fixed

The mechanic is really really good - he really knows his stuff, so if anybody needs feel free to ask me for his number

Cheers!

Thomas