Reply To: Hurco oil for polishing › Forums › Beginner Questions › Hurco oil for polishing › Reply To: Hurco oil for polishing October 29, 2019 at 5:40 pm #5753 LowjiberParticipant @Lowjiber If you can’t find Herco, just about any brand (sometimes referred to as “valve oil”) will work well. I use Music Nomad brand synthetic valve oil with diamond bort. Works well. A light coating of WD40 works well too.