So there are shaft seals on the coolant side as well? I thought a worn shaft/bush bearing might allow coolant to bleed into the exhaust system, but had second thoughts after looking at the central casting. Isn't the coolant jacket isolated from everything? Just a cavity cast around the bearing housing? Having said that, the turbo I repaired was definitely wet as well as oily. Of course turbos are ruined when coolant gets into the engine oil via a failure in the head gasket. So that may well be the origin of the water seen in a failed turbo. ??
TC
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