A synthetic oil developed based on a “Low SAPS” technology (sulfated ash ≤ 1%, phosphorus ≤ 0.09% and sulfur ≤ 0.3%), and aimed at HGVs or buses fitted with diesel or natural gas (LNG)-powered engines. Enables increased oil change intervals. Reduces ash deposits and provides excellent protection against acid attack due to combustion products. Also suitable for latest-generation engines meeting Euro VI standards and compatible with earlier powertrains.