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Old 07-01-2002, 03:11 PM
Kestas Kestas is offline
I told you so!
Join Date: Jun 2002
Location: Motor City, MI
Posts: 2,804
I agree this is something that can ruin an engine if done too aggressively. But with a disciplined hand it can clean out an old engine.

The premise is the same as what you find with a leaky head gasket....when coolant gets into the cylinders, one symptom is a clean combustion chamber (or clean spark plug). The water "steam cleans" the chamber, resulting in a cleaner engine.
95 E320 Cabriolet, 140K
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