I’ll recommend the Schaeffer 219 once again. I’m not sure you can beat it for the price. We spent several days below zero this winter in a row which is very abnormal. It identified many many issues from plumbing and electrical to trucks and anything in between. My grease was one of the few areas that I wasn’t totally frustrated, it was quite stiff but still pump able from a manual grease gun. If only I had been using their diesel treatment I think our equipment would have worked too. Even the Howes was gelling up in the shop.