I used a tap ( M16 and a 14mm drill bit). You can probably get away with out any sealant although I generally use loctite or JB Weld or Araldite depending on what day of the week it is. I did this on a Thursday so used Loctite.
I used a tap ( M16 and a 14mm drill bit). You can probably get away with out any sealant although I generally use loctite or JB Weld or Araldite depending on what day of the week it is. I did this on a Thursday so used Loctite.