Shell Helix Ultra ECT C2/C3 0W-30 is the latest in Shell's high quality range of fully synthetic motor oils, it’s proven to deliver greater performance than ever before. Thanks to Emissions Compatible Technology (ECT), Shell Helix Ultra ECT C2/C3 was developed to help keep the most modern diesel and gasoline engines free of dirt and build up. In testing, Shell's best-ever formulation achieved superior results – from excellent piston cleanliness to fuel efficiency and unsurpassed protection from wear and corrosion. Combining Shell PurePlus Technology and high performance additives, Shell Helix Ultra ECT C2/C3 delivers even higher levels of cleansing and protection.