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Radiator Flush

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BENZITCH's picture
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Hi
What is the citrus product used for cleaning the 126 cooling system?

Is there a DIY page for this also?

One other question, I read somewhere about using some dish soap and water in the system run it and dump it, followed by the citrus system, also run and dump it.
Any thoughts?

Bruce

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martinmayer's picture
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Re: Radiator Flush

I don't know about the citrus thing, but a very competent mechanic in California once told me that powdered dishwasher detergent is as good as anything to clean the cooling system, but he never told me how much to use or anything like that. I've always used the standard ones by Prestone.

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BoiseBenzes's picture
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Re: Radiator Flush

The citrus flush (powder) is available, just like everything else, from the dealer. It's about $11 for one treatment.

And again, the maintenance CD explains it all.

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Jim Hansz's picture
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Re: Radiator Flush

I believe these are the part numbers for the approved cooling system cleaning agents:

To remove oily residue from cooling system: disodiumtrixosilicate-pentahydrate.
Part number: A 001 986 21 71 (500 g)

Descaler for cooling system: citric acid.
Part number is 000 989 10 25 (500 grams. Use at 100 grams per liter)

These, or their current equivalent should be available from your dealer. Other over the counter cleaners can also be used provided they are thoroughly flushed from the system before refilling with the fresh coolant mixture.

Always dispose of old coolant and/or flushed byproducts and flushing chemicals in a responsible way. Check with your dealer, a local parts store or your county landfill for suggested disposal locations.

JCH

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Re: Radiator Flush

Thanks Guys
I don't have the CD and my books well they are the MB blue books but...
I have a maintenance job book on its way, but wanted to button up raditor flushes before it gets tooooo cold here in Jeresy.
Bruce

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lkchris's picture
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Re: Radiator Flush

One such specific need is head gasket leak where cooling system becomes contaminated with motor oil.

It's most often for cases like above that procedures and special potions exist.

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stricht8's picture
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Re: Radiator Flush

I was under the impression that the degreasing and citrus flush should be done if the cooling system was neglected, for example, by not flushing out and replacing coolant every few years.
Dimitri

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chad300tdt's picture
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Re: Radiator Flush

Here's a link that I followed when I did my citric acid flush. I got the 2.2 lbs. of citric acid from a local homebrew supplier and used the Prestone radiator Flush to degrease.

Citric Acid Flush Steps

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Re: Radiator Flush

Thanks Chad
That is what I was looking to find. Sounds time consuming, but beneficial.
Bruce

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