Back to the original question of what decking oil

I have a hardwood deck (not sure what but it is not tallowood which has an oily natural protector) and have used Cabots and Feast Watson on one part and Sikkens on another.

Have to say they all lasted about the same time before losing colour. (although the Sikkens is much more expensive)

Found with the Sikkens that it appeared to leave a coating which became blotchy, even after using the woodcleaning products (Deckcleen, WoodClean or similar??)

Found the areas I used Cabots or Feast Watson came up very well after using the cleaner but the Sikkens area is still blotchy. (re-coated with Feast Watson - not looking great even after two coats)

Also, the only part of the deck that has warped is the section that was originally coated with the Sikkens.

Having said that, the Sikkens on the adjacent timber doors looks great.

I'll use Cabots or Feast Watson next time round (with the "Natural" stain - be warned the clear one has little or no UV protection)

ps: The Deckcleen - or what-ever the brand name is, uses oxalyic acid to get rid of the grey timber coating - it is also good for converting rust - just leave a rusted steel ruler in full strength solution overnight and you'll find rust just wipes off with a little steel wool