ULTRA 7000 10W-40 especially suitable for the latest heavy duty diesel engines operating in extreme conditions, including those equipped with aftertreatment systems and EGR where API CH-4 specification is required. It also used for diesel applications using older and naturally aspirated conventional designs. It is recommended for on-highway heavy-duty trucking and off-highway applications including trucking, mining, construction, agriculture and marine and off-highway applications operating in severe low speed/heavy load conditions using up to 500 ppm sulfur fuels.