Automatic greasing systems

We have them, on all tractors and many trailers. They grease almost everything that has a grease fitting and doesn't rotate... suspension/steering, brake hardware, and so on. I'll run out and grab a few pictures. They're irritating when a line breaks because they make a mess, but overall they are a plus. You can see on your pretrip where the fresh grease has pushed out the old stuff, so you know if a certain line isn't feeding.