Improvements in engine hardware and manufacturing technology have allowed the use of lower-viscosity grades in passenger car vehicles while maintaining engine durability. Additionally, the demand for better fuel economy has increased both end user and original equipment manufacturer (OEM) interest in low viscosity engine lubricants. This has led to an increase in the use of 5W-20 and even 0W-20 viscosity grades over the thicker 10W-30 and 10W-40 grades. The trend to lower viscosities will continue with the introduction of a new viscosity grade for ILSAC GF-6B, 0W-16. ILSAC GF-6 is an automotive specification intended to increase fuel economy, enhance oil longevity, and improve wear protection and emissions control.
For more background on the transition from ILSAC GF-5 to GF-6, please see the video and articles below.
Kaustav Sinha, global GF-6 project manager for Oronite, talks about performance drivers and challenges, new specifications, solutions and real world feedback at the 2017 Spring Independent Lubricant Manufacturers Association (ILMA) Management Forum in Carlsbad, California.
API SN Plus is a supplemental standard to the API SN specification, which introduces oils for LSPI (Low Speed Pre-ignition) mitigation.