A DIY car owner needs to know whether they should use a torque wrench for oil drain plugs and how to properly maintain torque wrenches, as they currently rely on subjective 'snug' tightening without p

A DIY car owner needs to know whether they should use a torque wrench for oil drain plugs and how to properly maintain torque wrenches, as they currently rely on subjective 'snug' tightening without precise measurement.