Ultra Gray or Ultra Black RTV

Right Stuff and 3M Weatherstrip Adhesive, ( I prefer black )
Everything else went into the trash years ago.
No regrets .

I've found regular RTV of any color may cause more leaks than it solves. Especially if you are one to go around "snugging" pan bolts.

It's not nec to chug on a great bead of Right Stuff, as you are used to with reg RTV, a small bead sufficient to fill the void, bonds really well on clean surfaces.
No air chisel nec, lol

Good luck .