I am about to re-lube up my bearings (for 2 Scythe Ultra Kaze 3000 rpm 120mm fans), and I have a choice of 3 lubes that I have on hand: 1. Silicone spray lubricant. I can use one of those tube extension applicators to spray it somewhat neatly. 2. High temperature bearing grease. Extremely high viscosity, I don't think it would penetrate the bearing that well. 3. Sewing machine oil. If I can find it. I also have WD-40, but that is pretty rubbish as a lubricant. Anyone have an positive or negative experiences with any of the above lubes?