[holdover]

those of you that have the old style fittings and use the adapter on your grease gun, soon discover that a lot of grease does not go where it is suppose to. If you put a very small O ring in the adapter, then apply it to the fitting pushing slightly on the grease gun, it will work about as good as a modern three prong gun fitting. Those of you with a lathe can use a modified bit to cut a small recess to hold the O ring in place