I have a leaking freeze plug on the right aft portion of my M103 engine.

My plan is to:

1. Drain Cooling System

2. Clean Scale and coolant residue around the plug, cut away any remnants of former sealant.

3. Drill pilot hole in the center of the plug, insert self tapping hex screw.

4. Exert as much leverage as possible to yank the plug.

5. Clean plug area of debris, etc.

6. Insert new freeze plug using appropriate sized socket to press it into hole, using sealant around the outside seam.

Questions:

Is this the correct method to do this, and what type of sealant is recommended to seal around the plug?

Any feedback or guidance is appreciated. This problem has been causing a slow loss of coolant over the last few months, and I want to put a stop to it.

Thanks!