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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > Mechanical Maintenance and TSBs: Break-in / Oil & Fluids / Servicing / TSBs and Service Bulletin > Storing for the winter
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      11-19-2021, 04:47 PM   #1
Dante1
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Storing for the winter

Hello,
I decided to store my 440i for the winter and was wonder if there is anything specific I need to do before closing the garage door. I planning on keeping it in storage for about 4 months.

Thanks in advance
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      11-19-2021, 05:19 PM   #2
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4 months isn't that long in the world of car storage. You don't really have to do anything, maybe hook the battery up to a trickle charger and/or cove the car if it's dusty (although car covers can come with their own problems). For reference, my summer car has been in the garage for about a month and a half now and will be through March or April. I haven't bothered to do anything with it and it's been fine in the past (i.e. last year. This is the second winter I've had the car)
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      11-19-2021, 05:45 PM   #3
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A battery maintainer is a must.
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      11-19-2021, 05:52 PM   #4
thejeremyman9
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Quote:
Originally Posted by Billfitz View Post
A battery maintainer is a must.
+1, some people also overinflate their tires by a few psi, especially if you are not going to check on the car regularly and are never going to move it.
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      11-19-2021, 06:01 PM   #5
Dante1
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Quote:
Originally Posted by Billfitz View Post
A battery maintainer is a must.
I'm a little worried about a trickle charger because the car will be stored about 30 minutes from my house. Can I just disconnect the battery?

Edit: just found this in my garage.
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      11-19-2021, 06:12 PM   #6
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Quote:
Originally Posted by Dante1 View Post
I'm a little worried about a trickle charger because the car will be stored about 30 minutes from my house. Can I just disconnect the battery?

Edit: just found this in my garage.
That thing honestly looks pretty cheap... i would invest in a good one that you know is not going to overcharge, short out, etc.
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      11-19-2021, 06:22 PM   #7
Dante1
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Quote:
Originally Posted by thejeremyman9 View Post
Quote:
Originally Posted by Dante1 View Post
I'm a little worried about a trickle charger because the car will be stored about 30 minutes from my house. Can I just disconnect the battery?

Edit: just found this in my garage.
That thing honestly looks pretty cheap... i would invest in a good one that you know is not going to overcharge, short out, etc.
That charger is 25 years old that I used on my Triumph TR-6. Any recommendations?
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      11-19-2021, 07:06 PM   #8
thejeremyman9
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Quote:
Originally Posted by Dante1 View Post
That charger is 25 years old that I used on my Triumph TR-6. Any recommendations?
FWIW the official BMW one is a rebranded CTEK. Based on that (and a huge thread discussing them in this section), that is what i went with. Exact one i purchased:

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Make sure whatever one you get is compatible with AGM batteries, and do not run recondition on AGM.
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      11-19-2021, 10:21 PM   #9
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You don't need to spend that much for a maintainer. This is 1 amp, which is all that's required:
https://www.amazon.com/dp/B07W46BX31...NsaWNrPXRydWU=

You wouldn't want to use it to charge a dead battery, as it would take at least 3 days, but it provides more than enough juice to prevent the battery from discharging while the car's not being driven.
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      11-20-2021, 05:05 PM   #10
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When winterizing I like to fill the gas tank completely and add some fuel stabilizer. Todays fuels containing ethanol etc goes off very quickly and may cause gumming up of the fuel system.
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      11-30-2021, 04:20 PM   #11
karolp1993
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Is it a dry place? Component like brakes can be rust.
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      11-30-2021, 10:46 PM   #12
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Montreal in winter is dry as a bone. Even if there's six feet of snow on the ground the humidity remains low until May.
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