Best deck cleaner and oil

[strath44]

Hi folks, our deck is sadly several years overdue cleaning. What is the best product to clean it with and which is the best oil?
Also can you hit it with an industrial pressure washer or is that too sore on the wood?
Thank you!

[reggie747]

Be aware that if you give it a large one with a pressure washer, as it dries, lots of fibres in the wood stand up so it'll feel like a fur coat.