I recently moved to NYC and am storing my 2002 996TT at my folks' place in a climate controlled garage. I'll probably drive it every other month or so. What needs to be done to maintain it in good driveable condition?

 

Wash, wax and wrap. Top off all fluids, especially your fuel tank with a pre-described amount of 'Sta-bil' fuel additive to guard against moisture accumulation in the fuel tank. Put it on a trickle charge and you should be good. I wouldn't worry about your tyres going flat from sitting because of the time you stated you will be back, but if you do have floor dollies, those are always a good measure in prevention.

Have fun!

 

Pick up a battery tender from sears.

 

I think the Porsche battery tenders are the hot ticket. You don't need the fancy one unless you just have to have it, but Porsche's basic battery tender is excellent, and not over-priced.

 

dont really need sta-bil bottle of rubbing alcohol is the same thing and cheaper.
it will absorb and mostiure that builds up

 

I drive mine about every 6 weeks, and I always leave it with a full tank of gas and plug in the Porsche battery tender and it starts and runs great every time.