I have read on and off about dudes putting oil coolers on their 620's that don't come with it stock. I got my 620 in june and did a couple long rides on it, one tour of about 2000mi with some hard riding in twisties, highways, etc. in addition to my riding in town and so on and next year I am planning to do one or two more long rides in addition to my street riding in town and out on local roads. Would getting an oil cooler be a smart idea? If I can pick one up "cheap" I would give it some consideration.