An innovative multigrade mineral-synthetic (esters + HC-synthes) engine oil for modern high-load and high-speed diesel engines with and without turbocharging operating in difficult conditions. The oil complies with the Global Global Specification GLOBAL-DHD-1, which takes into account all the requirements of European, American and Japanese manufacturers of heavy diesel engines manufactured since 1998, operating in difficult conditions with increased mileage between oil changes and complying with the current standards for the content of toxic substances in exhaust gases and installed on heavy vehicles (more than 3.9 tons).