Its that cold, damp time of year again, the time that starts in September and stretches through to May

. Its the time when dripping aircraft are marooned on muddy fields and dampness and condensation prevades everywhere.
In the current issue of GASIL, ( we all read GASIL don't we?? )
Link to GASIL
on Page 5, there is an interesting paragraph:-
During the winter, aircraft spend a considerable time either in a hangar or secured against weather dangers outside. Engine manufacturers recommend that engines which are not being used and run to normal operating temperature for a considerable period should be inhibited, and the LAMS schedule which forms the basis of most light aircraft maintenance requires the engine to be run every week or turned over by hand every fortnight if the aircraft is not being used.
I was just wondering how many people actually turn the engine or warm it once a week? And if you do warm it, how hot do you run it - bottom of the green arc, centre of the arc or what? And how long do you run it for? Are frequent, short runs better or worse than infrequent long runs?