In message , "Dave Plowman (News)"
writes
And there's no reason not to use park in an auto instead of the
handbrake when stopped in traffic, etc.

But on a steep hill or when a winch is attached to the towbar (on-topic
for d-i-y?) it reduces the strain on whatever in the gearbox is holding
the car.

My holey Disco's handbook says to use the handbrake when using a winch.
--
Bill