Had been researching on what was best to use to seal trailer decking .I kept coming across how well used motor oil and diesel mixture works for preserving any wood against the elements. I ended up using a 50/50 mixture of each and it worked very well. It sucked into the wood completely leaving the wood dry to touch.
It basically went on just like a normal oil stain from a box store. It is not slippery at all and I really like the color of it. I simply sprayed the mixture on the boards with a pump sprayer and it went on in mins. I just let it sit in the sun for the day and it turned out great. I coated the top and bottom and plan on recoating every season. Hopefully this will be my last redeck on this trailer. The last pic shows the finished product all dry. This is a great cheap way to maintain our trailers. Figured I would pass it along.