to day events, how to exclude damage..?

Moin,Moin, once again to the current day events, SAAB and the “engine problem”. I’ve had a lot of (actually too much) headache in the last few days, because in the event of an engine damage of Saab I probably have no guarantee or culant to expect. 1) that with the oil change intervals and the full synthetic oil…is clear! 2) let the oil sieve look at, let engine oil pan of (possibly) residues clean.. recommendable. ..at least to look once like the current situation at me 3) to the problem with the crankshaft ventilation. a) it now affects all 9 5 he or only those from year 04? b) the problem certainly lies in the fact that the ventilation by emlusion of oil and water (due to much short-range operation and not reach the correct operating temperature) gradually increases. => Can you not also clean it or look at it in which condition it is. If you have made 1)& 2) & 3b) and everything is “tutti”… is then you vo r damage to the engine? Or is there still the problem of a possible slurry of the engine (is this the help of the Liqui Molly Motor Clean, which is filled in with old oil when changing oil and is then drained) and the resulting chain game (have I recognized the connection correctly)? Short and good, one can take precautions and then be sure that the engine holds or remains it still a “vaban game” because one does not know exactly what exactly it is gt? Would I be interested in whether I am right with my guesses about “preventive measures” or if it all doesn’t help and you can only wait and see what happens…. Greeting Konstantin