Originally Posted by dntnowood
The lowes i went to couldnt even answer that question...
Never buy paint, stain, varnish, urethane, baked bread, meat, chicken, fish from a box store. Get it where you are supposed to get it.
Go to a paint store. Or for your application a marine store, if you have one near, might be a good bet too.
I agree that an oil finish, with attention to maintenance, would be your best bet for the truck bed especially if it is to be a working one. You will be constantly nicking, scratching, chipping the urethane.
Sometimes less is more. Raced a Cheoy Lee Lion 35 for years. We were always refinishing rails and things with stain and marine varnish to keep them sparkling. The deck itself was teak, original to the boat and had never had a drop of oil or anything else applied to it.