ELF EVOLUTION FULL-TECH VCX 0W-20 is the best performance lubricant using ELF Advanced Synthetic Technology. ELF EVOLUTION FULL-TECH VCX 0W-20 was formulated for the newest generation of engines for premium car manufacturers meeting latest ACEA C6 and API SP (RC) performance standards. It meets the latest standards providing protection against LSPI (Low Speed Pre-Ignition), a phenomenon similar to knock that can damage the engine.