Im a Technician for a college and here we have two machines. Both hurcos, A VM1 and a TM8i. They are both nice machines, however we have a problem with our coolant going bad after about 2 weeks. I know that the coolant life is expected to be short when the machines sit for a long time without use. Sometimes they sit here without use for several weeks a time, the sometimes they are used like crazy for weeks. We have a skimmer on both of them, and it helps a little bit, but still not a solution to the problem. So im asking for advice on some ideas on how to help preserve the life of the coolant. Im not sure if theres some coolant types out there that would be good for our situation (we currently used Wallover ws8800), or if we need to add some things to the coolant to prevent it from becoming a science project and smelling like death. If anyone has anything to add to help then that would be great!