If I'm stopped at the lights with my hands off the steering wheel, I hear a sissing noise.

If I put a little pressure on the steering wheel, anti-clockwise/ clockwise, doesn't matter, the sound stops.

It sounds like it's the power steering letting off air, while not being used.

My question............Is this normal, or is it an indication that something will need repairing in the near future?

(220D 1973)

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306D 1975 (camper) - rusting away
W116 450 SEL 1975 - sold
W114 long wheelbase ambulance, 3 litre diesel 1974

VW Golf 1 convertable - midlife crisis item
VW T4 van - support vehicle