TECHNOL PRO 15W-40 has been formulated with highly refined mineral oil and high quality additives for heavy-duty trucks and busses equipped with diesel engines. This engine oil has thermal stability and resistance to oxidation that reduce deposit and harmful acidic by-product formation. It contains detergents and dispersants, possesses anticorrosion and antiwear properties that keep the engine clean, preserve its power and prolong its service life. It is recommended for use in the previous generation of diesel engines of different manufacturers.