Aral BlueTronic 10W-40 Aral-synthesis technology. Description. Aral BlueTronic SAE 10W-40 is easy-fluidity, semi-synthetic, all-season, high-quality motor oil made by Aral-synthesis technology. The oil together with its specially selected additives ensures fuel saving, high reliability of lubrication, protection from wear; prevents formation of deposits; guarantees the engine cleanliness and excellent characteristics at the cold start. It is used by Brabus company as the first fill oil. Approvals and Specifications: ACEA A3/B4; API SL/CF; MB-Approval 229.1; VW 501 01/ 505 00; Fiat 9.55535-D2