Battery Tender / Winterizing for storage
Like others here I have a C-tek (they are also resold by Porsche) that I have used for many years and cars. (Cigar lighter connection) It works great, no issue and keeps car ready for use for when I have that nice day to drive it when I take car out of storage or hibernation.
If you live in an area of cold weather where you will leave car offline for several months, in addition to this, I would recommend a list of additional items to also include.
1.Change Oil and filter (cuts down on the acid residuals in crankcase)
2.Top off Tank w Best fuel ,if inclined add some fuel saver (StaBil or similar) before filling to mix it up and get in line before storing.
3.Pump tires up additional 5-8 lbs (helps with flat spotting, plus they usually lose 1-2 pounds a month just sitting)
4.Check the freeze point of Coolant if you haven't change it recently.
5.Wash and detail the car
6.Place some desiccant under the seats or on some tin or plastic plates on the floor
7.Plug in battery maintainer
8.Unless your garage floor is sealed w epoxy or paint , lay down a plastic sheet and park the car on it, some people put down a half dozen moth balls on the plastic to keep mice and other vermin away from the area.
9.Cover the car , if you don't have a legit indoor car cover, get a queen or king fitted sheet (find at local thrift or TJ MAxx) if you don't that size
10.Check on it every 3-4 weeks until spring to make sure battery is tended( on mine a little red light comes on when charging is taking place )
Don't be tempted to pull it out , unless you want to perform this again.
I collected this from many peoples expirences, on many lists over the years as I have always stored my "best" car for winter. It's not that I'm against driving it in the winter, it's that i know my chances of something happening (accident, sliding off road, corrosion (Ohio salts in winter
) are greater)
Besides , we have a 4matic for that fun.