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Old 12-05-2002, 11:50 PM
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Make sure you remove all the oil from the cooling system using a 3% solution of MB's alkaline cooling system cleaner (MB p/n 001 986 21 71). Run the engine for 10 minutes and then completely flush the cleaner out of the system with clear water. It may take more than one try to get it cleaned out.

You might also want to replace the hose between the head and the water pump while you have the head off and it's also a good opportunity to change the serpentine belt, if it needs it.
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