For those in cold climates with salt on the roads...I will not get my M3W back on the roads until a few spring rains have washed salt off the roads of Chicagoland. Probably not til late April (I am also having shoulder surgery this month, so that factors into my annual 'bring her back from hibernation'). I have usually not touched the vehicle during the winter, but do you advocate starting it and letting her idle for a while periodically? I have generally resisted that, since I figured idling may do more harm than good. No chance to get her out on the roads for at least a few more weeks, and she has sat since November at this point.
I would be tempted every two or three months to take the plugs out and turn engine over on starter until oil pressure is up and perhaps more important on this dry sump engine, so the crankcase is scavenged of oil. Remember to re-charge the battery afterwards.
Certainly not starting the engine though unless you are going to take it for a drive.
