Unbelievable how I got used to it, the door lies close to getting worse. Since 2011 our new building was a maintenance company of the developer each year and has oiled and adjusted within 10 minutes throughout the house. Since this year I do it myself and have therefore ordered me this product for the front door. There is a difference like night and day. The door can now be playing catch up with two fingers and the castle here feels very smooth. I had not experienced as if the company was there. Initially, the key was wetted several times with oil but that is quickly gone.
It really is a serious difference and when I consider how little oil required was holding the bottle securely long. Compared to the 70 expensive window company I save money so neat and have confidence that I'm doing it properly because I need per window and door 5 minutes, the company is only by running.
Top product I will buy it again at any time should even be empty.