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#1
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"Soap" in my coolant
Hello all.
I did a coolant flush and changed it about two months ago. Yesterday, when I removed the cap to check the levl, I noticed that its bottom was covered with a kind of white soap. Where can this come from? I suspect it can be oil from a leaking head gasket, do you agree with me? Or it is simply rubbish from the circuit? Thanks! 190E 2.3, 190000kms, 1992 |
#2
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Oil from a leaking head gasket will eventually separate into black or brown spots floating on the coolant.
I suspect you used a commercial detergent flush and didn't get all of it out -- did you drain the block several times? If not, it's probably detergent. Detergent foam would indicate a need to drain and replace the coolant -- you do NOT want it to foam. If it's oily, though, you have a problem. Note that there is usually some soluble oil in the coolant for the water pump seals. It's normal to see an occasional oil spot a couple mm in diamter floating around in the coolant tank. Soap, no... Peter
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1972 220D ?? miles 1988 300E 200,012 1987 300D Turbo killed 9/25/07, 275,000 miles 1985 Volvo 740 GLE Turobodiesel 218,000 1972 280 SE 4.5 165, 000 - It runs! |
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