OK, point taken.
For my car, they also recommend refreshing oil every year, or 15,000 km or so. I always do it +10%, as I think this is overly precautious.
I did lubricate my hoover motor recently though, as the sound became harsh. It might be over 20 years old, though.
It's always the question which maintenance to do preventive, and which only when the need arises (but you might be slightly too late). And to keep listening, to the sound of the moving parts, I think.
According to your standards, it is a miracle that my motor still functions...?
But maybe that is because I live in a rather mild climate, and use my motor not very often.
Still, when the motor is dismounted anyway, it's a good moment to regrease!
Greetz,
A33