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Old 06-28-2000, 11:50 PM
Posts: n/a
Black waxy/tarry stuff is very likely oil. Especially if it accumulates on the top of the overflow tank. 190e 2.3's notoriously leak between the oil return and water jacket on the last cylinder, in the head gasket. The gasket decomposes and often corrosion is present on the block. If you do the gasket job yourself clean the block with a straight razorblade..then if you are carefull you can fill in any corrosive defect with a little JB weld.
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