I want to decalcify and derust my cooling system. The MB manual states that the system should be de-oiled before running the citric acid solution through the system.
This is a 1982 300D Turbo with a light alloy radiator,so a strong alkaline cleaner can not be used. What can I use to de-oil the system? Do you think a non-sudsing dish washing compound would do the job? Or how about using oven cleaner? Would they harm the light alloy radiator?
I can get the citric acid for removing the calcium and rust.
I wish thank anyone who can help me.
Bill Lewallen Lexington, Ky.

Mercedes makes a cooling system cleaner for this purpose. I don't have the part number with me, but I'm sure that partshop will.

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Benzmac:
Donnie Drummonds
300E
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM

Thanks Benzmac.We have a MB dealer here in Lexington, but their prices are just too high.I have the citric acid.All I need Is something to de-oil the system so the acid can do it's job. Bill L.