TLT TRIBOL OGY & L UBRICA TION TECHNOL OGY SYSTEMS, STRATEGIES & RESEARCH FOR LUBRICATION PROFESSIONALS AN PUBLICATION | OCTOBER 2012 Technology, performance drive surge toward Groups II, III & IV. BASESTOCK EVOLUTION Richard Butler Q&A Condition monitoring of MWFs Oil Analysis Reports Focus on fi nance, not technology Lube Fundamentals The ABCs of plain and rolling element bearings President’s Report Making tribology fun for students Digital TLT: Sponsored by Napoleon Engineering Services at www.stle.org .