Loosing coolent and have slug in the oil cap on 2002 Mercedes-Benz ML500

Is changing oil cooler seal solve the problem thank you. Email- rnkordanoski@gmail.com

by in Wake Island, HI on September 02, 2013
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1 answer
ANSWER by , September 02, 2013
pressure test cooling system if there are no external leaks then you could have a head gasket problem