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Old 05-15-2013, 10:44 AM   #1
csa714
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Cooling system

Hi All -

I bought a 2004 330 without any repair records...and very fortunately for me, the car is in great shape (after purchase inspection). Yes, I know that I am very lucky.

Anyway, I am planning on replacing the cooling system, but beyond the normal visual wear and tear inspection, is there a way to check if it has already been replaced? Any tricks?

76k mileage -so according to the threads I've read, failure between 75k and 100k is common. I would rather replace ahead of failure.... to date no issues with temp. Currently running like a top.

Tnx
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Old 05-15-2013, 10:55 AM   #2
Solidjake
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If you have an inspection mirror maybe on the expansion tank or thermostat you can find the date of production stamped onto them.
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Old 05-15-2013, 10:56 AM   #3
Mango
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Quote:
Originally Posted by csa714 View Post
Hi All -

I bought a 2004 330 without any repair records...and very fortunately for me, the car is in great shape (after purchase inspection). Yes, I know that I am very lucky.

Anyway, I am planning on replacing the cooling system, but beyond the normal visual wear and tear inspection, is there a way to check if it has already been replaced? Any tricks?

76k mileage -so according to the threads I've read, failure between 75k and 100k is common. I would rather replace ahead of failure.... to date no issues with temp. Currently running like a top.

Tnx
you might get lucky and might be able to find stickers on the radiator and expansion tank. but it's best to assume it's never been done and just do it. depends on how much peace of mind is worth to you! GL and welcome!
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Old 05-15-2013, 10:59 AM   #4
BimmersGarage
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No tricks..
If you don't have any documentation from previous owner then it's safe to assume the system was not replaced.

Best to replace everything (less the radiator). If you have an automatic, include a new A.T.T. with the exp. tank. Also, get a gallon of BMW coolant and mix it 50/50 with distilled water and do a proper system bleed after everything is re-assembled.
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