Hello, I'm new to 3d printing and new to ultimakers ... i bought a ultimaker 3 extended used, and the last owner use grease of the rails and it's all
gummed up.... manual says it uses special oil, and has a coating on the rails.... i have Zoom Spout oiler and have used that on many stuff. Will other oil hurt
the rails and is there a coating on them? looks just like their chrome.... Thanks..