[Zeke]

I don't think an oil only finish on the outside is what you want. If it is, you will be applying it a lot more than once every two years. Think every 2 months. Also, be careful when applying any clear over an oil stain or penetrating oil. You may get some reaction and some reactions aren't pretty.

Marine products are appropriate but sometimes not user friendly. If I were using a marine varnish, I would want a clean room and the door flat on sawhorses. It likes to run. The rest of the products available now in CA aren't worth the time or effort. The VOC laws have ruined the formulas. I'll bet we use half again much more paint these days due to premature failure. Makes a lot of sense, doesn't it?

A quart will do 8 door sides, one coat. Have someone ship you a quart of the good stuff from AZ or wherever. I'll bet the formulas in FL are pretty good, but I don't know.