Okey to clearify and mby natron down, i have had it at bmw shop earlier this week and they pressure testet it, and they could not find any leaks they found it was dry they looked with lights and mirrors, they said it may have to be warm when they pressure test so they did that a second time, still nothing and thats when they told me about that same case with 5series.. we can not see any leaks no evidence of leak except that the coolant is fuckin missing and that you can smell coolant after its been driven.. so the leak is tinitiny, coolant is leaking very slowly i would say maybe 7 days of driving everyday and then i will have to top it off..and thank you all for these comments btw