You should be safe with ZF transmission, thank God you don't have 5R55N

You should ask a local transmission shop if they can change the oil/filter....
yeah, when buying - thank God i found this forum and read about 5R55N so i knew what i was going to get - ZF!

change the oil and filter - some people saying that it might actually make things worse. is it the real deal? why?
how is it needs to be done to be done right and not make things worse? special oil? special filter? special procedure?
Thank you very much for your responce!