Logan Ruta HD Extra LS is an advanced Low SAPS Heavy Duty diesel engine oil specially formulated for Euro V & Euro VI engines fitted with emission control systems using DPF, EGR or SCR technology. It is also suited for previous generation turbocharged and naturally aspirated diesel engines used in North America, Africa and Europe running on Low Sulphur Diesel. Logan Ruta HD Extra LS 15W-40 CK-4 provides exceptional wear and corrosion protection for all engine parts and prevents combustion soot. This Lubricant is developed for engines running on Low/Ultralow Sulphur Diesel. When engines are running on High Sulphur diesel, the drain interval needs to be reduced by 50% of what the engine builder is recommending.