An advanced heavy-duty diesel engine oil designed to meet or exceed the performance requirements of Mack EO-N, Volvo, MAN, and a wide range of other OEM specifications. This engine oil is also an excellent choice for all types of high output turbo-charged or non-turbocharged diesel engines with EGR (Exhaust Gas Recirculation) systems used in North America, Latin-America and African countries. Due to the special designed and well-balanced additive technology, Logan Ruta HD Plus 15W-40, prevents soot and sludge formation on piston rings and increases engine power output.