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General E46 Forum
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Old 02-17-2013, 11:38 PM   #1
ultrabums
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Wurth Radiator Seal for coolant leak

Hi, everyone..

I have a e46 325i (face-lifted, 2003/3).
Recently, I found out some small leak of coolant from radiator, slowly leak to under-cover.

Before fixing it physicially(such as radiator replacement, etc), I'd like to stop it temporarily. Some mechanic suggest to use below product.

Wurth Radiator Seal... but, seem they have two types of it...

http://www.wurth.co.uk/data/productdocuments/060035.pdf

Is there anyone who used it before?
I wonder whether it's okay to my car or damage to engine or not...
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Old 02-18-2013, 01:09 AM   #2
Stinger9
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You're asking in the wrong place. That stuff is for junkers that you just want to keep on the road. We like to keep our cars running like new. And keep new parts in our cooling systems to protect our engines.
Would rather drink that stuff than put it into my rad.
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Old 02-18-2013, 02:01 AM   #3
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A new replacement radiator is your best bet since the coolant system pressurizes while running. Your slowly building up to a catastrophic failure.

A replacement from an auto parts store in the USA costs about ~150 USD, which is about ~162,000 KRW there in Korea.

Your options are going to be a parts store, or pay a premium at the BMW dealership. You may have better luck online though.
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Old 02-18-2013, 02:56 AM   #4
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Thanks a lot.. Almost kill my car.. I'll go check Pelican site or other online store...
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Old 02-18-2013, 03:44 AM   #5
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That temp fix gunk gets stuck in your cooling system. It usually contains solids suspended in fluid and you'll never get it fully out of your cooling system. Never use it unless you've got a dirt-cheap beater that has a radiator that's literally more expensive to buy than the car itself.
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Old 02-18-2013, 04:28 AM   #6
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It's a Wurth product, so it'll probably work, unlike the stuff you find in an autoparts store, which will cause a mess throughout your entire cooling system.

Even though I like Wurth products, I still recommend skipping it and just replacing the radiator. An aftermarket BEHR radiator has good fitment and is only around $200 US.
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Old 02-18-2013, 05:31 AM   #7
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So, no one has said to make sure you know where the leak is from.

There are two commonly known radiator failures...one by the top neck of radiator, where the port gets brittle and cracks. That failure can go catastrophic quickly and so you shouldn't drive with it.

But, there's also a slow leak that I had...between the black side pod and aluminum fins. There's a gasket between the two...just by where the aluminum tabs hold onto the black plastic. If your leak is from there, I know that can stay stable for months. If you have that, just make sure you're keeping the system at a proper level with proper coolant...or if temps are above freezing now, just distilled water would be okay for a while...but not long.

Even though you can run on pure water, I hear there are many chemicals in coolant you want for a variety of reasons.

Monitor your level, DO NOT OVERFILL ET! Keep it between min and max level when the car is cold.

Read Mango's sticky and do what you can afford. With cooling systems, 'less is less and more is more'! Meaning, if you haven't replaced other components, now would be a good time...everything will be out and/or easily accessible.

If you begin to overheat, pull off, turn car off, and call a tow truck or risk your engine or just a couple thousand dollars of damage...and I'm very serious in case you didn't know.

And also, if you didn't know, you can do this yourself...you don't need a mechanic...and you should probably not take your car to the mechanic who suggested a temporary fix for a potentially serious issue...or he should have said, it's fine...it's a slow leak...keep it filled to the right level and monitor the level of coolant and your temp gauge...just like I said!

Find another mechanic...someone who cares about doing things the right way for your car.
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Old 02-18-2013, 05:36 AM   #8
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Cinnamon fixes your problem No buildup and washes straight out.
I would never put any of that gunk in my engine.
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Old 02-18-2013, 06:14 PM   #9
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At the beggining, I was interested in all kinds of radiator seal, Wurth, Loctite, etc.. Now, I realized I was crazy...
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Old 02-18-2013, 07:09 PM   #10
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There was a time when each of us considered, and had to think about that kind of solution. We never would have known without other's input.
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