I operate a 50 metre concord (jun jin). The automatic greaser let go after two years. We replaced it with a Lincoln with time intervals. We use L999 grease. It is a very light grease, excellent for year round use. It is very important not to get any dirt in the container so we fill the container by using the grease fitting. I set my greasing cycle so that I go through one container of grease per week. This is for the back end only and works great for S-tube. As for the boom, I agree, they should be greased manually so that you can inspect at the same time, weekly or bi-weekly.