Shell Helix Ultra Professional AP-L is designed to meet the demanding requirements of particular high-performance engines, including Peugeot and Citroen and those requiring ACEA C2. Shell Helix Ultra Professional AP-L 0W-30 for gasoline and diesel engines meets the technically challenging Peugeot B71 2312 in-house specification required in the latest Peugeot vehicles. To comply with Euro 6 regulations, it is formulated specifically for use in modern diesel engines using diesel particulate filter (DPF) technology and gasoline engines with three way catalytic converters (TWC).