Treating deck boards

[mobilnissan1991]

I have an 8 foot utility trailer I use quite often and Id like to treat the boards. Ive heard of everything from a 50/50 mix of used oil/diesel, used ATF and also hydraulic oil. What have you used with success?

 

[Ronsant]

Linseed oil, raw if you can get it. Boiled linseed oil has a drying agent in it. Raw does not me will penetrate better.
Obviously it will also take longer to dry.

 

[dnewton3]

It's wood, right?
Why not use something made for wood ... ever hear of Thompson's Water Seal? That's what I use on both my house deck and trailer deck.
Used oils make things messy, and often too slick if they get wet (rain).

 

[benjy]

if supports are not o16" replacing with composite is prolly forever!!