Re: Alpha One 3.0 Merc Frost Plugs
These are not Frost or Freeze plugs.
They are CORE plugs,just there for casting the engine.They use sand to cast the block,and these are access/exit holes.For sand.
Not a Safety Stop at all,for freezing.
Engines crack with them still in,engines crack with them in the bilge.
Sometimes we find the core plugs in the bilge,and the block ISN'T cracked
But your engine does have DRAIN plugs,and that is what needs draining.
IDHP