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  #1  
Old 05-03-2002, 10:32 PM
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Join Date: Feb 2001
Location: SE PA
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Suggestions for flushing oil from cooling system after head gasket failure.

Had about 1/4" floating in the expansion tank. I know that citric acid is great for scale/etc. but I probably need a good emulsifier for this. Any thoughts/product suggestions? I suspect dish soap would be about as useful as it is in a dishwasher. Who hasn't seen the results of that!

As always, TIA
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  #2  
Old 05-03-2002, 10:51 PM
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mbz makes a powder detergent just for that. but liquid joy works even better, hands down
paul
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  #3  
Old 05-03-2002, 11:51 PM
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We use what was recommended by the MB tech office---go to a marina and get a bottle of concentrated bilge cleaner. use this with water, works great. I do recommend a new pressure tank (where the pressure cap is), and if it's a model with the hidden expansion tank (aka puke tank) I recommend replaciing that as well. Do this after flushing the cooling system at least twice.
Gilly
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  #4  
Old 05-04-2002, 09:02 AM
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Why the recommendation on the new exp tank gilly?
I will be pulling the head on the E320 this over the next week or so and upon completion will be doing the "degrease/flush" on the coolant system.
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Last edited by engatwork; 05-04-2002 at 12:22 PM.
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  #5  
Old 05-04-2002, 10:05 AM
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New expansion tank because typically the tank will have the contaminated coolant in it at well. If it's not replaced, you'll end up with oil in the coolant again. The tank isn't really isn't designed for cleaning out, can't get it clean enough IMO. If you remove it and it's not dirty, then just empty it and reuse it i guess.
Gilly
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  #6  
Old 05-04-2002, 05:03 PM
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I've found SHOUT! to work really well. 'Bout 3 bucks at Walmart -- it doesn't foam up and it dissolves the oil really well, without being too harsh on your coolant system.

Also, be sure to replace all of the "soft" oil soaked hoses that balloon on the ends. They will eventually fail on you if not replaced -- especially check the heater hoses.

~Paul

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  #7  
Old 05-04-2002, 11:37 PM
MikeV
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Shout it out!

I argee with Paul;
I used Shout after my head replacement and it worked wonders. Just keep flushing the system out. Got the same hint on Shout from a Benz Mechanic. Also if your head gasket is not sealed correctly, you can feel the Shout in the oil and retorque your heads or check other areas.
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