Quote:
Originally Posted by Duke2.6
What is the point of using a "detergent"? It won't remove any mineral deposits or rust scale... sounds like snake oil to me.
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It breaks the surface tension of water, apparently allowing it behave in a "wetter" manner. It also holds fine contaminants in suspension, rather than letting them settle.
An illustration I recall is pouring water onto dry soil and watching it bead and not be absorbed -- because surface tension prevented it. Soapy water, conversely, was absorbed straight away.
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2008 E350 4matic / Black/Anthracite
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Gone but not Forgotten:
2001 E430 4matic, 206,xxx miles, Black/Charcoal
1995 E320, 252,xxx miles, Black/Grey
1989 260E, 223,00 miles, Black/Black
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