Don't even know where to begin or if what I am asking is remotely possible and so I ask:

Is there a way to preserve an 8' long by 10" dia. pear tree log? I am likely going to saw a flat on it but otherwise
would like to keep the log whole set on one or 2 stone pedestals to be used as a memorial bench along a river.

Besides debarking the entire log does anyone think I can get a useful bench for 10 or 20 years by some treatment?
Varnish and wax? Creosote? Some other chemical formula?

I don't mind that it might twist or check (though checking would let in moisture) but mostly looking to keep it
from rotting and being insect ridden. Will sit in snow and rain in a woodsy - not too sunny location.

Preferably the preservation method would not require 6 months or 3 years. Log has been stored vertically off the ground,
since being cut about 2 years ago. Looks well intact.

Thank you for any suggestions, encouragement or wake up call .

Cheers, Sam