Defensive driving means "always expect the unexpected." The first step in driving defensively is to wear the seat belt. See Seat Belts.
Anticipate what they might do and be ready.
Fastener Tightening Specifications - Engine
Fastener Tightening SpecificationsApplicationSpecificationMetricEnglish3-Way Catalytic Converter to Front Pipe Nut50-Y37-lb-ft3–Way Catalytic Converter Nut20-Y15-lb-ft3-Way Catalytic Converter to Rear Muffler (Clamp) Nut40-Y30-lb-ftCatalytic Converter to Cylinder Head (LFX) - First PassCatalytic C ...