I know for most of you (if not all) this will be a stupid question, but I need to know how do you lube the U-joint on a 58 Chevy? I can see in the maintenance schedule that it is supposed to be lubed every 1,000 miles along with about 30 other items, but I don't know how it is done. I also realize that it is not a zirc type fitting, but I don't know what you use to supply the lube.