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Old 05-01-2003, 02:10 AM
Newbie Benz Driver
Join Date: Dec 2002
Location: Between Oakland and Vallejo, CA
Posts: 253
weep, weep, weep

Since my parents had the water pump changed in the 420SEL, i noticed the mechanics put in green Prescrap in the system, and on verge of an heart attack, drained the system out before it was too late. But it was too late. I noticed a green drip out of the radiator before the change. Now the car is losing coolant. Plus i lost the invoice for 1-800-radiator, i'm the process of looking up credit card records. Is it possible to have this leak repaired, it appears to be between the tank and core? If not, and if i'm successful at forcing the radiator place to get me a new radiator, can I demand them to get me an Behr? The one in there right now is a Valeo.
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Old 05-01-2003, 02:26 AM
haasman's Avatar
Registered User
Join Date: Jun 2001
Location: San Francisco, CA
Posts: 3,097

Can radiators with leaks between cores and tanks be repaired? Well it seems the best answer would be: It depends.

Some radiator shops will say they can be repaired and will take your money and do it. Others say it can be done but it is a best a 50/50 proposition. The dissimilar materials is the main problem in that getting them to properly seal can be a problem, especially after the both have gone through mulitple cooling and heating cycles.

Others, including members of this forum say don't waste your time and money and simply replace the radiator.

It is my opinion that the "green" collant didn't cause the radiator to leak. It just happened. Yes the green stuff isn't good for the car but it is highly unlikely for that to be the cause.

This brings the conversation to getting the mechanic/ service to replace the radiator- I doubt it. If the car overheated due to a failing water pump then I see it as collateral damage and honestly I think they would regard it the same way. Or, it just happen at the same time.

You mentioned 1-800-radiator, did you get the water pump from them? Did you also purchase a radiator and have them install it?
Please clarify.

If, if it is a new radiator then who ever you bought it from should warranty the radiator, whether filled with the green stuff or MBZ coolant.

Finally! If they supply Behrs as well, then you would certainly have the right to request that brand. Whether they will exchange it would depend on their cost difffential between the two.

If you are in need of a radiator, check with Fastlane. They have excellent prices, service and are great people who are very knowledeable. After all, they are the good people who sponsor this site!

So .... talk to us,

'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)
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Old 05-01-2003, 10:50 AM
Registered User
Join Date: Jul 2001
Location: SoCal
Posts: 1,303
Was the water pump replaced because it leaked? As cooling systems age, the components weaken and rubber and seals fail. The leak will occur at the weakest link, and the rest of the system may appear ok. When the leaking component is replaced, though, it is not unusual for a new leak to appear at the next weakest link.

Unless the new coolant was in the system for a long time, it is unlikely it would have in any way contributed to system failure. Old coolant from MB or anyone else is far more likely to cause problems than any decent new coolant.

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Old 05-01-2003, 12:54 PM
Registered User
Join Date: May 2003
Location: North Carolina, USA
Posts: 1
Green stuff = bad?

So... from what I'm reading, it's the overall opinion of the whole group that the green stuff is not good for a Mercedes-Benz? Is the MB coolant that much better (I just flushed my cooling system and replaced it. I will consider flushing again and replacing if that is the general consensus, but I hate to waste the time or money if not necessary. What do all think?
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