I have found that frequent changes are better than a good flush. I have not found a chemical that really does it except the Mercedes Acid for oil removal. You have to use gloves while handling it.

You will have to replace the radiator if needed to get the scale out. You can't rod these like the old ones.

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Benzmac:
Donnie Drummonds
1991 GMC Syclone
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM