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Hard-working engines making frequent stop–start journeys can suffer from a serious build-up of dirt and sludge, which can potentially lead to premature engine failure.

Shell Helix HX2 is a multigrade oil designed specifically to clean and protect hard-working engines without diesel particulate filters.

Shell Helix tests

To clean and protect an engine, the oil must continue to perform until it is removed when the car is serviced. With some manufacturers recommending longer service intervals, an oil’s ability to stay fit is even more important. Throughout the oil’s life, it has to disperse more and more dirt – keeping it locked away and preventing it from being redeposited in the engine.

Our scientists perform a variety of tests that measure the ability of Shell Helix oils to resist breakdown and disperse dirt. We also test our competitors’ oils, so that we can benchmark our lubricants and demonstrate the benefits of using Shell Helix oils.

Specifications and approvals

Because lubricants vary in quality, universal criteria are used to describe oil performance and usage. Shell Helix motor oils not only meet these increasingly demanding international specifications but usually surpass them. Shell Helix HX2 exceeds these specifications: API SG/CD.
Compared with a normal mineral oil (API SG/CD)

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