I've been having a lot of trouble with coolants rotting and turning sour in machines. This is recent, and getting worse, even though nothing has changed about the brand of coolant (Blaser Vasco 1000), the equipment, or the way we mix and use the stuff. We've also had serious problems with coolant foaming like crazy.
Anyone care to offer recommendations for a solution, or an alternate coolant that's good for stainless and aluminum in turning and milling applications?
KG