I'm going through a model 40 mill for my son. The machine has been sitting in his garage for a few years and I don't know how long it sat before he bought it. So everything needs some TLC. I pulled the spindle out today and cleaned the bearings. They seem to be fine. Index called for some Gargoyle brb lifetime grease. I don't have any of that handy. I'm thinking it needs something light. What is everybody using?