XFS technology Additional low Ash additives, developed specifically for the latest generation engines, offers maximum compatibility with exhaust gas post-treatment systems. Improves resistance to oxidation, inhibits deposit formation, contains anti-wear, anti-scuffing and anti-friction agents. XFS, eXtra Fluid Shield, acts as an extra shield to protect all lubricated components and maintain engine performance over time. Cutting-edge technology. Technos XFS represents the perfect fusion between excellent performance and a formulation evolution capable of meeting the needs of today's modern engines which must comply with strict environmental standards. The exclusive Bardahl Polar Plus + Fullerene anti-friction Formula forms a triple layer of protection: a surface lubricating film, a zone of.