Just curious what most people use to lubricate thier chain? I used to use Castrol Chain Lube but found that it would pick up every single piece of dirt that the road had to offer. Does anybody else have this problem?? After spending hours once cleaning the inside of the cover I've just been using 10w30 motor oil but I'm applying it every other day to insure the chain is lubricated, is there any reason that I shouldn't use this???? Does anybody have something better that they'd recommend??