Good day, In order to carry out the oil drain, the oil refill at the Cadillac machine professionally, we need the detailed instructions of Cadillac-Detroit. Also the drawings – schemas to it. Where can we request these ? Can you describe us how we have to proceed with this service oil change. That would be great. By the way, thank you for correct notification of the error code that the brake pads were to be renewed – brake lining was only 2 mm. Thanks for your answer. C hrChe