I've replaced all necessary gaskets on rebuild job for a 1999 Olds Intrigue, and have hit a snag. I'm not a novice, (having 25+yrs of "shade-tree" repairing & rebuilding competently.) After replacing gaskets, I started filling the engine of it's fluids coolant etc.. But as I went to double-check the oil pan for any residual gunk etc. , I started to loosen the drain plug, somehow the cooling system route and oilsystem route have breeched. I now have this muddy water/oil pouring out. Any suggestions or advice is greatly appreciated.