Has anybody used old engine oil to treat plywood? I'm just about to renew the wooden panels and floor of my trailer with wbp plywood and I was about to go and buy some fence treatment, when my partner suggested using old engine oil instead. I know the plywood is water resistant, I just wanted to apply something so water doesn't cling to the wood. Could be a good idea but I'm concerned that the oil will have a detrimental effect on the the glue holding the plywood together. Any thoughts?
Sounds disgusting!! Like oddbod said use marine ply. Slightly more expensive but should give you 10yrs. I use marine ply for the floor of narrow boats. I cut all the sheets before hand and bitumen paint the underside of the ply and all the edges. This keeps the moisture out and gives it a good long life. The same process can be used for your trailer. Dont buy bitumen paint from a specialised paint shop, its too expensive. Buy it from a builders center. Its the same stuff they use on roofs. Use a cheap roller to apply it with then throw it away. Hope this helps. Leo.
I highly recommend used motor oil for finishing exterior wood! I have done this very thing, with much success. I have a flatbed trailer that has a plywood deck. The plywood was getting very dry and beginning to crack and split. I tried coating it in used motor oil as an experiment. It soaked up the oil like a sponge and I actually liked the dark brown, walnut appearance. Then about a year later it started to look dry again so I gave it another coat of oil, this time a much thicker, liberal application. Now, 3 years later, it still looks great! And it's very waterproof as well. It looks like a railroad tie and like it won't need to be refinished for years to come! I can speak from experience, this works and works great if you don't mind the dark brown look.
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