Unfortunately, I have a problem with my engine. As soon as the oil is a little older (about 8000km), the engine starts knocking at high load. I’ve already had the phenome?n since 3 oil changes. Even if the engine is quite cold, it is very strong. It takes a few seconds to stop the flapping. Here are a few more details:https://www.motor-talk.de/…uf-and-power loss-t6046913.html Now I wanted to check the oil pressure, because many users think it could be an age-weak oil pump, which causes the problem. How are the target values for this engine at different speeds? I would do this: warm up the engine, then screw the oil pressure tester in, then let someone step on the gas in empty run and then read the values. Is this correct? Can I use this part?https://www.amazon.de/…/ref=sr_1_1?