As I know, O-ring chains are self lubricated so additional lubing is often unecessary. You just need to keep it clean, general rule of thumb is about 500 miles. I know a lot of people will not touch their chain with WD40, but I use it on my old F4i and the chain lasted for over 18k miles before I sold it. I also use WD40 to clean the chain on my 600RR track bike. ALso, don't forget to clean the sprockets when you clean the chain.