[W126 Coupe] Radiator Additive

[Steve Nervig]

I, of course, meant Axel, not Alex. Dyslexia strikes again.

Steve

On Aug 20, 2008, at 9:11 AM, Steve Nervig wrote:


> Just a clarification so as to clear up any confusion - when Alex  

> said 'dishwater' detergent, I think he means the type of detergent  

> you would put into an automatic dishwasher, which is a non-foaming  

> type of detergent; as opposed to handwashing dish soap, which will  

> suds up (which you don't want).

>

> The alkaline cleaner mentioned, is a heavy-duty detergent that could  

> be used in place of Alex's dishwasher detergent step.

>

> Steve

>

>

> On Aug 20, 2008, at 8:42 AM, Camran Nassiri wrote:

>

>> Hi Steve- no oil in the system, however as you and Alex suggested  

>> I'll try the recommended steps.

>>

>> Thanks,

>> Camran

>>

>>

>> From: dakota at mac.com

>> To: mbcoupes at mbcoupes.com

>> Date: Tue, 19 Aug 2008 18:38:10 -0700

>> Subject: Re: [W126 Coupe] Radiator Additive

>>

>> Oil in cooling system? After repair, use Alkaline cleaner, Disodium  

>> trioxosilicate, pentahydrate.

>> Part number is 001 986 21 71 (500 grams)

>> Scale in cooling system? Use Citric Acid at 100 grams per liter.

>> Part number is 000 989 10 25 (500 grams)

>> Steve

>>

>>

>> On Aug 19, 2008, at 5:45 PM, Axel Wulff wrote:

>>

>> Camran,

>>

>> If you are worried about your cooling system, an additive is not  

>> going to help.

>>

>> I'd recommend a cooling system flush, replacing the thermostat,  

>> checking the condition of the hoses and replacing the radiator cap.

>>

>> A cooling system flush is rather involved:

>> - Drain the system (lower radiator hose is a good spot)

>> - Run the system with water and dishwater detergent for 1/2 hour

>> - Drain system and flush with water until water comes out clean

>> - Fill with water and citric acid (MB sells this, you can also get  

>> it at a pharmacy)

>> - Run for 1/2 hour

>> - Drain and rinse until water comes out clean

>>

>> Make sure the heater is set to max heat and defrost so that you  

>> clean out the heater block. You may also want to clean out the  

>> monovalve, a lot of crud seems to collect around it.

>>

>> Even if an additive was able to loosen the crud and build-ups,  

>> you'd still need a flush to get it out of your cooling system

>>

>> Regards,

>> Axel J. Wulff

>> 610-731-5453 Cellular

>> 610-572-4611 Home

>>

>>

>>

>> From: mbzman560 at hotmail.com

>> To: mbcoupes at mbcoupes.com

>> Date: Tue, 19 Aug 2008 09:15:14 -0700

>> Subject: [W126 Coupe] Radiator Additive

>>

>> Does anyone have a suggestion of some sort of radiator additive  

>> that could clean out (even partially) the water jets in a 420SEL  

>> engine?  My 420 SEL with 120K miles is beginning to over heat (the  

>> gage goes up to the line between 80 and 120) and I am not sure if a  

>> new radiator or cleaning the water jets in the engine would help.

>>

>> Thanks,

>> Camran

>> 90 560SEC, 91 420SEL

>>

>>

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>

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