There are so many chain lubes out there and they all claim to be the holy grail of lubrication. Pick your poison,its just chain lube.

The dealership will tell you whatever you are using is cr@p and you need to buy their wonder product or you bike will immediately explode(it probably wont)

I use this and it works great,cheap too:
http://www.webbikeworld.com/t2/motorcycle-chain-lube/dupont-teflon-chain-lube.htm


Bill. "I spent a lot of money on booze, birds and fast cars. The rest I just squandered." -George Best