We used to do it every 25 hrs.
Get an engineer to show you and then watch you do it, and then sign you up for pilot maintenance approval, which CASA will need to inspect on your next audit. Choosing the right grease, filling the gun properly, inserting the grease until the right colour goop oozes out the valve, all that stuff. Get the engineer also to sign you up for piddly little things like removal/fitment of duals, removal of doors, anything else that is vaguely related to maintenance and which any reasonable person would say is blindingly obvious, but which CASA can pounce on you for.