Special high-alloyed mineral multi-grade oil with hydrosynthetic for high-load, high-speed diesel engines, with and without turbocharging, operating in very harsh conditions (including very high ambient temperatures), as well as for engines with high mileage. Specially developed to protect the engine and achieve maximum utility under maximum load. Product properties: - High-viscosity semi-synthetic base of the highest quality provides excellent protection against friction and wear, significantly extending the machine's life compared to analogous oils even in the most severe operating conditions; - Compared to analogs, it has increased thermal oxidation resistance, which, in conjunction with excellent detergent and dispersing properties (TBN>10), efficiently reduces residue and varnish formation, prevents deposits of any kind, and keeps engine parts clean throughout the entire oil change interval; - Unique dispersant additives efficiently maintain soot particles in a flowable state; - Fully compatible with all seals, due to the high-viscosity base, it is less prone to leakages even if the seals are worn; - Contains components that prevent oxidation and deposit formation on pistons and rings, completely stripped from cylinder walls by the oil scraper rings. In conjunction with low volatility, this significantly reduces oil loss due to coking even in worn-out engines and allows its use in engines with extended oil change intervals (Longlife Service) as well as in ordinary engines; - The use of non-degradable thickening additives of the latest generation allows the required viscosity to be maintained throughout the entire oil change interval; - Efficiently protects engine parts from corrosion of any kind; - Can also be used with fuels with increased sulfur content. Suitable for any high-load diesel engines of road (tractors, buses), off-road (construction, mining, and agricultural machinery), and special vehicles from European, American, and Asian manufacturers meeting Euro I, II, III, IV requirements with the required quality level of CH-4 engine oil or lower. Highly recommended for heavy tracked vehicles. Can also be used in gasoline engines requiring API SL engine oil quality or lower.