Coolant System Flush and Refill · ComponentBlock Drain Plugfor 1966 Jaguar 420 4.2L I6 · RWDUnitslb-ftNmTorque18lb-ft25 NmNotesIf equipped, use new washerOther components in Coolant System Flush and RefillDrain Petcock4 lb-ft · 5 Nm📝 Suggest a correction to this torque spec