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General E46 Forum
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Old 02-23-2011, 09:52 PM   #1
jiggz
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Does OEM coolant/anti-freeze expire?

I have a gallon of OEM coolant from several years back, and I need to use it again (low coolant). The date on the bottom is 10/18/06.

Packaging or expiration date? Should I use it or just buy a new gallon?
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Old 02-23-2011, 11:36 PM   #2
colo330xi
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Probably a packaging date. If it is clean/unused coolant, you should be fine. Coolant breaks down and gets dirty living in engines and radiators, not on shelves.
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Old 02-24-2011, 01:20 AM   #3
e4Tsex
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Originally Posted by colo330xi View Post
Probably a packaging date. If it is clean/unused coolant, you should be fine. Coolant breaks down and gets dirty living in engines and radiators, not on shelves.
You seem so sure, but chemicals DO break down over time. What do you base your answer on?
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i heard that this cars go like 300k miles
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Old 02-24-2011, 07:35 AM   #4
Black_BMW
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I think it should be fine.. But if you're worried, you can call your dealer and see what they have to say about it..
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Old 02-24-2011, 07:43 AM   #5
E-XLVI
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either buy new bottle or invest in a coolant glycol tester for $5-$10 at any auto parts shop or online.
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Old 02-24-2011, 07:59 AM   #6
MindFK
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Yes

A bottle costs like 10 bucks. Dont be cheap or the car will eat you, your wallet and then take care of ur girlfriend.

Remember, this sucker comes from Germany. Remember their history? Lol
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Old 02-24-2011, 10:56 AM   #7
jdstrickland
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Quote:
Originally Posted by jiggz View Post
I have a gallon of OEM coolant from several years back, and I need to use it again (low coolant). The date on the bottom is 10/18/06.

Packaging or expiration date? Should I use it or just buy a new gallon?
My limited experience is that the shelf life is very long, measured in tens of years. The service life is considerably shorter. You can use that coolant.
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Old 02-24-2011, 11:49 AM   #8
shortyb
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Quote:
Originally Posted by jiggz View Post
I have a gallon of OEM coolant from several years back, and I need to use it again (low coolant). The date on the bottom is 10/18/06.

Packaging or expiration date? Should I use it or just buy a new gallon?
DO NOT USE IT! Send it to me immediately for proper recycling. I'll even waive the hazardous disposal fee in exchange for you paying shipping.

































Seriously, its fine, use it. Yes, certain anti-corrosion components will degrade while sitting on the shelf. But you'll be driving something else in the 20+ years it takes to do so.
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