I have a 6 foot privacy fence made of pressure treated 1X4's, 2X4's and 4X4 posts. It is 5 years old and has turned gray due to the UV rays from the sun.

I plan on preserving the wood for a second time and am looking at the best product to use. I had originally used the Olympic Waterguard because of the Consumer Reports ratings but was hoping this time to use a longer lasting product!

Any Suggestions? Thanks in advance!