SERVICE BULLETINS SMC-13-69 18-SEP-13 MERCURY DIESEL TDI 4.2L V8 EXHAUST BACK PRESSURE SPECIFICATION SMC-16-66 06-SEP-16 RECALL FBSA MERCURY DIESEL VESSEL SENSOR HARNESS REPLACEMENT SMC-18-61 28-JUN-18 MERCURY DIESEL 4.2L V8 TIER 3 EXHAUST MANIFOLDS REPLACEMENT