Hello together, in advance, I know that after a long time of the motorcycle (87 Softail EVO) it can come to oil accumulations in the crankcase and these are pressed over the ventilation into the free. However, it does not stop at all with me at all, it has now already run several times in the stand and that also not only 1-2 minutes and I drove about 20 kilometers. Yesterday I took a 0.5 PET bottle, introduced the ventilation hose in and with insulation tape the whole closed. After a journey of about 8 kilometers it has again pressed 0.3 to 0.4 liters out of the crankcase…I guess I have now filled about 2 liters, comes of course also because the cylinders were dismantled. To be more precise, in winter heads and cylinders were dismantled, stage 1 kit with worked heads, sharp camshaft, adjustable push rods and Mikuni carburettor were installed. Motorcycle runs, runs also clean, but it just doesn’t hear someone has an idea what to look for first or what to look for… thank you and greetings.