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      03-11-2015, 03:18 PM   #1
mermar
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Changing oil? Better before winter storage or in the spring?

Curious on your opinion - due to harsh winter - I store my M from Nov - March. Is it smarter to change the oil in the Fall right before storage or in the spring - as I pull the M out of storage in the spring. I change the oil once per year - due to time as I only put 3-4k miles on annually.
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      03-11-2015, 03:44 PM   #2
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Quote:
Originally Posted by mermar View Post
Curious on your opinion - due to harsh winter - I store my M from Nov - March. Is it smarter to change the oil in the Fall right before storage or in the spring - as I pull the M out of storage in the spring. I change the oil once per year - due to time as I only put 3-4k miles on annually.
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      03-11-2015, 04:37 PM   #3
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I'd definitely say Autumn. Flush and fresh oil while waiting is always appreciated by the machinery. While the oil certainly doesn't get "old" sitting for 5 month.

Look at the boats, always fresh oil before you put her on land for the Winter.
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      03-13-2015, 05:20 AM   #4
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Definitely better to change the oil in the fall. It is not recommended to store your engine with used oil in it.
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      03-13-2015, 06:51 AM   #5
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^^^
Knows better than me. Apologies for the misleading advice op! Couple guys in my neck of the woods doing it wrong apparently.
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      03-13-2015, 06:57 AM   #6
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Originally Posted by BMRLVR View Post
Definitely better to change the oil in the fall. It is not recommended to store your engine with used oil in it.
I've been parking my vehicles with "old" oil in them for five years now and all Blackstone results cone back unchanged. I don't see how it makes a difference. I put on less than 10k over the course of a summer so some springs there is no need to change it. Its a huge waste of oil and not to mention money changing oil with so little mileage on it.
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      03-13-2015, 07:45 AM   #7
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Quote:
Originally Posted by Millie View Post
I've been parking my vehicles with "old" oil in them for five years now and all Blackstone results cone back unchanged. I don't see how it makes a difference. I put on less than 10k over the course of a summer so some springs there is no need to change it. Its a huge waste of oil and not to mention money changing oil with so little mileage on it.
The reason I'd pick Autumn before Spring is obviously not the need for maximize lubrication but to make sure I have maximum level of anti corrosion in the fluid. In the marine world it's a definite but I'm sure it doesn't hurt here neither.

Cheers

PS. In my mind 10k miles certainly isn't too short to make oil change worth while. BMW's recommended 15k interval is a lot for any engine and close to crazy the S65. Most folks around seem to make the investment to change at half or less. Let's do what we can to save the S65!
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      03-13-2015, 08:55 AM   #8
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^^ He's probably talking KM since he's in Canada which converts to just over 6k miles. Would you still change the oil?
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      03-13-2015, 09:37 AM   #9
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Quote:
Originally Posted by 81bear View Post
^^ He's probably talking KM since he's in Canada which converts to just over 6k miles. Would you still change the oil?
Ah, got it and agree. I originally targeted half of BMW' rec i.e. 12k km but ended up having my first two rounds at around 8k km. Felt good so plan to not go over 10k km going forward. Bit of cost but believe it comes back on less depreciation the day it's time to sell...
I personally wouldn't buy a M3 maintained by BMW's book only but that's only me.
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      03-14-2015, 09:41 PM   #10
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This is not a do or die thing....... If you don't change your oil before you store your car it probably won't matter a whole lot.

The recommendation to change in the autumn/before storage is because used oil has combustion byproducts and water in it from blowby. When combustion byproducts mix with the water in the oil it creates an acidic mixture in your sump, storing with this acidic oil in the sump could cause corrosion on internal engine parts. New oil would not be acidic in nature and is desirable over used oil for storage.

One more plus to storing with new oil is the fact that you are ready to rock when you start up in the spring!
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