Christopher Tidy wrote in
:



Most gearboxes rely on hydrodynamic lubrication. This means that the
oil isn't fed into the gearbox under pressure. It's just picked up by
the gears as they rotate and entrained between them. As the oil is
drawn between the gears, it gets squeezed. This squeezing creates
pressure in the oil, which separates the metal surfaces and reduces
wear. You can think of it like an old-fashioned mangle for wringing
clothes. The clothes are drawn between the rollers, and as they pass
through, the clothes push the rollers apart slightly. Oil does the
same thing in a gearbox.


Just to add, the oil in an automatic _is_ pressurized, which means it can
be forced where it needs to be.


--
Anthony

You can't 'idiot proof' anything....every time you try, they just make
better idiots.

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