Everybodys different, I took my old yzf600r to the car wash a couple of times and sprayed it off then towel dried it. Some people would pass out if I told them that. I even used to foam brush! Anyway, to answer your question , yes I would lube the chain after every washing. Again opinions vary - every 200 miles - everytime you fill up - every ??? miles - everytime you look at it - just get in the habit of doing it on a regular basis.