What Type of Engine Oil Should Be Used in Colder Weather?


Quick Answer

Drivers should use synthetic blend or full synthetic engine oils with lower viscosity in colder weather. As cold weather causes engine oil to become thicker, engine oils with high viscosity levels may be unable to flow between engine parts. Vehicle manuals state the suggested viscosity levels for cold weather.

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Full Answer

Viscosity refers to the resistance a fluid shows to a force that attempts to make it flow. As such, an engine oil with high viscosity is thicker and moves slower than an engine oil with low viscosity. Using a synthetic blend or full synthetic engine oil also provides additional protection against the cold. As different engines may have different viscosity requirements for cold weather, it's crucial that the guidelines in vehicle manuals are followed.

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