Q:

What is the best oil to use in a winter environment?

A:

Quick Answer

Modern motor oils are multiviscosity, requiring no change to accommodate seasonal or regional climates. The only oil that should be used in an automobile is one that meets or exceeds the manufacturer's specifications, typically found in the owners manual or on a label under the hood.

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What is the best oil to use in a winter environment?
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Full Answer

Multiviscosity oils have a "W" in their product description, such as 10W40. The "W" means winter, so that particular type of oil is manufactured to perform as a 10-weight oil, from freezing down to minus 30 C, as well as operating as a 40-weight up to 100 degrees C. The brand of oil chosen is irrelevant as long as it meets the vehicle's viscosity and lubrication guidelines. Deviation from oil that matches the specifications can void the car's warranty.

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