I have a 2004 Malibu LT 3.5 V6. I want to change the coolant starting by draining the radiator. To be thorough, I want to remove the engine block coolant drain plug just above the oil filter to remove as much coolant as possible before I flush it out with water. Is this a risky procedure? If not, what torque should I use to re-install this engine block bolt? Should I use anti-seize grease or Locktite on the bolt threads before tightening? Thanks.