SQUEAKY BE GONE... !!

I am Employed as a Sterilising Technician in Private Health care. My job requires that I load surgical trays into a steam steriliser. I do this using a trolley that loads a rack into the machine, a handle is used to lock into place for loading and unloading. We have 3 of these machines of which work constantly for a 12 hour day. So we use them alot throughout the day. Our (as I work with a team) trolleys and handles all have had annoying stiffness and squeaking. We have been told by the Big Boss the hospital can't afford new ones at the moment so we need to just use what we have. So we thought we would try WD40!!! And guess what it worked a treat. No more stiffness or sqeaking...!!! As you can see from my before and after videos and pics Thank you. WD40...!!!