Sealant for engine mounting bolt holes

[Carl]

I am wondering what you folks recommend for a sealant in the bolt holes when mounting an engine? My previous engine had a clear silicon type product that seemed to be effective and was fairly easy to remove. I am in the process of buying a new to me (2005 Honda 150) engine and the installer is saying he uses 5200. Granted that will do the job of sealing the holes, but I know that stuff is a bear to remove after it hardens. I can't imagine ever trying to remove it from inside the holes in the future. I asked him about using 4200 which I have not personnally used, but I understand it is easier to remove that 5200 and works just as well. What about plain old silicon?

Thanks

Carl