CASTROL 5W40 ENGINE OIL Castrol® EDGE® is a fully synthetic engine oil that is engineered for drivers who want only the best from their engines. Castrol EDGE with Fluid Titanium is the natural choice for drivers who demand maximum performance and protection from their cars. Unlock exhilarating performance with every drive.Viscosity: 5W-40 Specification: API SP, ILSAC GF-6, Advanced Full Synthetic Engine OilSize: 4 LitreFeature:• improves oil film strength by 30% and reduces power-robbing friction• Ten times stronger against high-temperature oil thickening to unlock maximum performance• Six times stronger against wear vs the industry benchmark• Improves fuel economy (0W grades)Suitable for:- use in automotive gasoline and diesel engine where the manufacturer recommends an API SP or earlier specification 5W-40 lubricant