Purchased to use during install of a DIY mini split air conditioning system. The pump was a wonderful purchase. Used to drain 2 sets of lines, worked perfect, was extremely quiet, fast, smooth and very little vibration when compared to other single stage pumps. I was skeptical as not knowing the brands reliability but after using it, I would recommend it. The instructions included were well written and understandable. The pump did come with required oil in the box. Packaging was good.