Hello, I am looking to restore my 20-year old pressure treated wood deck which is starting to deteriorate from the weather conditions and greyed out. I was considering giving it a good cleaning and pressure wash to get the grey out, and then applying a few coats of Tung Oil to preserve it and extend its life. Any thoughts on which product(s) I should be using to accomplish this? And I have read up two opinions around using concentrated tung oil versus thinning it out 50-50 with a Citrus Solvent type thinner. For my application, should I be thinning or not?