By your description it sounds like it threw a rod. On both of my turbos I lose oil from the breather hose on top. Like a quart every 3 weeks, but it marks its territory everywhere I go.

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1959 Gravely LI, 1963 Gravely L8, 1973 Gravely C12
1982 380SL
1978 450 SEL 6.9 euro restoration at 63% and climbing
1987 300 D
2005 CDI European Delivery
2006 CDI Handed down to daughter
2007 GL CDI. Wifes