We seem to have courses on Rotax engines.
Can we have some courses on Lycomings and Continentals, please?
As an example of the need for a Lycoming course I am stunned by how few Lycoming owners know they should clean out the finger oil strainer at the bottom of the sump at each oil change. It's only the main inlet to the oil pump.

It is pretty coarse but it does collect quite a build up of carbon lumps that come off the underside of the pistons.