collapsing radiator hose

[wa b]

The top radiator hose on my `97 A6q avant will collapse on itself, when the 
engine is turned off and cooled down.  When the engine is started the hose 
will slowly fill out to its proper shape.  I dont know if it is just normal 
heating/expansion and cooling/contraction going on.  Kinda disturbing to 
look at, I dont like the stresses it puts on the hose.  Was thinking of 
getting a spring of some sorts at the hardware store to help it keep its 
shape.  The hose also has a small hose molded on to it that goes to the 
expansion tank.  If I open the expansion tank cap when the engine is cooled 
and the hose colapsed,  the hose will imediatly go back to its normal shape.

TIA for any ideas or suggestions

Andrew
`88 80q
`97 A6qa