Hello Motortalker, I own a ravaglioli 1065.EL. It is similar to a butler tyre assembly machine. I have the problem that the upper impressioner does not always have the full power to pull the tire off the bulge. That’s why I wanted to try to change the hydraulic oil in the pressure unit for the first time. I would also like to wait for the machine and have requested an operating instruction directly from the manufacturer. Does this also have to be done with an electric rotor? It turns with electricity with me, if so which oil has to be used here? Are there any other points that I should pay attention to? Would you like to bring the device to front 🙂 Thank you for all the advice 🙂