Haven’t looked into it but do shops offer lube analysis services? Yeah you could send out your own sample to a lab, having it as a shop service would be way more accessible to people.

Though, in my experience, getting people to commit can be a pain, lots of “yeah I know we have a long p-f interval and it’s super noticeable before it functionally fails, but it’s not that much effort so I’m doing needless maintenance anyhow just in case”, which end of the day you do you.

That’s the boat I’m in, I swapped my laptop from kubuntu to Debian which is solid for me. Server has a lot setup on it that I could move but for now Ubuntu server works, not really feeling the push to change.