ELF EVOLUTION 900 5W-50 is an ELF Advanced Synthetic Technology lubricant for Gasoline and Diesel car engines, and is particularly recommended for the most severe weather condition. ELF EVOLUTION 900 5W-50 is intended for Gasoline and Diesel engines, with or without supercharging, in cars and light vans. The viscosity grade 5W-50 allows the use at any time of year and it is particularly recommended in extreme weather conditions.