Even if you spray chain wax on after power washing with water, you stand a very good chance of trapping water or WD-40 inside the chain.
What are your thoughts on using steam, that evaporates very quickly after applying it, to a motorcycle chain?
I use it on the original, non-Oring chain of the Enertia Classic.
I use pressurized steam, on the first pass, to clean off oil, dirt and grime before I use an old toothbrush & WD-40. I then wipe the chain dry and apply chain lube. I then take it for a 10 minute ride to heat up the chain, then apply chain wax to melt the wax onto the chain.
I have not noticed any rust or chain damage as a result of using steam, but I suppose there is some risk.