Cadillac CTS Quiz
Vehicle Care

Viscosity Grade

In this manual: Vehicle Care
Introduction — 6In Brief — 59Keys, Doors, and Windows — 64Seats and Restraints — 66Storage — 15Instruments and Controls — 169Lighting — 22Infotainment System — 95Climate Controls — 10Driving and Operating — 120Vehicle Care — 170Technical Data — 7Customer Information — 48OnStar — 35
~1min read

SAE 5W–30 is the best viscosity grade for the vehicle. Do not use other viscosity grade oils such as SAE 10W–30, 10W–40, or 20W–50.

If in an area of extreme cold, where the temperature falls below −20°F (−29°C), an SAE 0W–30 oil should be used. An oil of this viscosity grade will provide easier cold starting for the engine at extremely low temperatures.

When selecting an oil of the appropriate viscosity grade, always select an oil that meets the dexos1 specification or equivalent. See “Specification” for more information.

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A quick Cadillac CTS quiz: every answer comes with an explanation and a link to the manual page.