He said in the other thread that he had an external leak. Mine used to have some residual pressure in the cooling system, but Bar's Leaks Head Gasket Repair mostly fixed it. The OM606 engine is pretty reliable, but the head gasket may still be a relative weak point.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL