Opel Automobile Owner's Manual page 18

18 In brief
■ The engine cooling fans may run
after the engine has been switched
off 3 162.
■ After running at high engine speeds
or with high engine loads, operate
the engine briefly at a low load or
run in neutral for approx.
30 seconds, before switching off in
order to protect the turbocharger.
Keys, locking 3 19, Laying the
vehicle up for a long period of time
3 161, TwinTop roof operation
3 39.