Bed Wood question-Boiled Linseed Oil, Or?

[frenchy51]

I'm painting a 69 long bed for my son to use. I'm to the installing new bed wood stage. The truck will mostly be stored outside and will see a lot of light hauling use-furniture etc.
My question is: for a durable and still good looking finish-how about boiled linseed oil or some other type of oil finish that can be reapplied every 6 months or so? I can't seem to find much info on this. Most say to use automotive clear or a marine varnish, but I don't think either will last in our Hot Nor-Cal climate. Especially since this truck will not be garaged. Any one used any oil type finishes? Results? Thanks (PS-I'll probably use oak)