I think I would wait till you have time to take it all apart. There are a lot of bushings that should be cleaned and lubed. There is also the swing arm roller bearings and maybe service the shock as well. If you put it up on the center stand, you can do a little at a time with little risk, but if it is talking to you, I would say a good lube is in order. I'm lucky to have grease fittings on my GL, so you can stay ahead of the problem. I rode with a guy last week that had a GL in need of lube and it was making a nasty sound over every little bump in the road.