Jammer":3o7n5qku said:
For me that means (...) starting it for 15 mins once per week.
What should that be good for?
engine will get warm to the touch, yes; but it won´t reach proper operating temperature. As a result, combustion will be poor, you´ll just promote carbon buildup on your plugs and elsewhere. Furthermore, your oil will slowly get saturated with acidic residues.
The quick rise and sudden fall in temperature will result in condensation of water in your exhaust - and some cylinder bores.
leaving the car idling means the oil pump will be running at its minimum capacity, meaning low oil pressure plus it´ll lack cam lubrication. The alternator won´t charge your battery much either when idling.
I´d keep it garaged and leave it alone until the opportunity of driving arrives. If you plan for a longer period of storage (like two or more months), the car should be thoroughly cleaned inside and out (road grime and dirt attract moisture), the windows rolled down just an inch, and an oil change performed so you have clean fresh oil without any saturations in your engine. on a stick tranny car, some folks like to put something heavy on the left pedal to declutch.
some engine oil or marvel mystery oil squirted into the cylinders is a cheap precaution as well on a long time storage.
full tank (no gasohol/ E85!) is mandatory IMO, as is disconnecting the battery.
chaz mentioned putting the car on jackstands, though being a good idea that might damage ball joints and strut rods - eventually. I am yet to see proof of that. A second set of wheels with junk tires would do the job as well.
