Reply #15: I'm sorta surprised that they have to have a gear oil change

[madokie]

The differential oil in automobiles never need changed or none that I know of do unless of course you immerse them in water for a while. there is no contaminants that can get in as in a cars engine. The manual for my ford truck says that the transmission never needs any oil changes either.
I'm not sure that the information is correct that the wind turbine gear boxes need an oil change other than if they have a gear failure where there would be pieces of gears in there. Under normal operation there is no wear, ie no shaving, in a normal gear box except if there is a gear failure.

Are we sure that maybe that information about the oil needing changed is only pushed by an anti wind turbine goon.

The reason you have to change oil in an automobile engine is because of the gas/diesel, whichever the case that gets past the rings and the fact that they are running at such high temperatures and the additives they add to the oil for those reasons wear out but that wouldn't be seen in a gearbox in a wind turbine.

educate me if you would.