Mobil 1 0W-40 exceeding industry standards and the major leading builder requirements is the cornerstone of the performance reserve that lets Mobil 1 0W-40 keep performing well after conventional oils cannot. Mobil 1 0W-40 provides the widest range of protection — providing the extreme cold start protection of an 0W grade and the high temperature protection of an SAE 40 grade. Mobil 1 0W-40 meets key industry and car builder specifications for: Mercedes MB 229.5, BMW Longlife 01, Porsche Approval List 2002, VW 502.00/505.00/503.01, GM-LL-A-025 (gasoline), GM-LL-B-025 (diesel), ACEA A3, B3/B4 and API SM/CF. Mobil 1′s viscosity is recommended by many European car builders, its wide range providing unsurpassed levels of protection and an overall smooth driving experience. Mobil 1 0W-40 keeps engines starting in Arctic-extreme cold, and it cleans deposits, sludge and varnish often formed in high temperature operating conditions. If you want total engine protection, excellent fuel economy and a product recommended for applications under warranty, you want Mobil 1.