Question about 1997 Saturn SL
I have the same problem with a renault kangoo diesel , black thick oil in coolant --nice clean oil in motor , you have an oil cooler leaking oil into the cooling system , replace the oil cooler , I have not been able to get the black sludge out of the coolant internal parts , heater is blocked too , I thought of using kerosene to break down the sludge , but worry it might damage the hoses and they are not cheap, good luck
Posted on May 31, 2010
Check trans dipstick to see if coolant is in there the trans cooler is part of the radiator and may be cracked
Posted on Jul 21, 2009
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Posted on Jan 02, 2017
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