Lubrication is by far a very important aspect of any machinery with moving parts. In automobile engines for instance, there's a stringent requirement for the lubrication of the bearings. Too thin oil can't hold surfaces apart and too thick oil wouldn't reach the interface in question. You have done a great job in educating us on this. It's left to every owner to get the numbers right.
Well done sir!
I love your important contribution. Always a pleasure to have you around.