It’s very strange, because the temperature starts to rise to over 90 degrees, the fan always turns on. This also works perfectly (except that it often starts with the Omega), but I have the problem that it always starts to rattle after a few seconds. It’s the most powerful thing to hear when you get out of the car (directly at the driver’s door side). If you then walk away from the car, you can’t even notice it anymore. Can this be due to an old ball bearing of the fan? If so, how does it come that you don’t hear anything, if you hold your ear over it while the fan is running, however, if you stand near the driver’s door (height spray wall)? There is nothing connected or should the cooling lines transmit the flaps so well? Oh yes, can you oil the fan without screwing it off? If so, where can I put the caramba plug on? Thank you very much.