I think this is what I will do for now... Will use wood sealant, primer, outdoor paint, flashing and cocking to seal. Just hope this will protect it long enough until I sell the house in 30 years!
Lot's is being looked at to stop water wicking into wood but for most of a hundred years it is just putting something between wood and concrete. If you want to do this now [post a few pictures here and we an suggest some easy ways to install it. I finished a house that another framer left almost finished and one thing he miss was the sill gasket. We did the whole house.