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Shell Helix Ultra ECT C2/C3 is a fully synthetic engine oil that uses advanced technology to ensure compatibility with exhaust emission control systems (ECT) and effective protection of particulate filters, which contributes to high engine efficiency. Thanks to the use of modern additives, this oil reduces friction of internal engine components, which allows for fuel savings. Shell Helix Ultra ECT C2/C3 has been developed in accordance with the latest Shell technologies to meet the requirements for the protection of catalytic converters in petrol cars and particulate filters in diesel vehicles. It also acts preventively, protecting against the formation of ash, which can lead to exhaust system clogging and reduced engine efficiency. It is suitable for modern petrol, diesel (including those equipped with particulate filters) and gas engines.