What Is Motor Oil’s Freezing Point?

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Motor oil does not freeze since it does not crystallise or harden at any temperature. At freezing conditions, however, motor oil thickens, losing the viscosity that permits the oil to travel throughout the engine and lubricate it. In cold temperatures, this increases the chance of engine parts being damaged.

Oil does not freeze solid in cold temperatures because it is a petroleum product, although it does lose its liquid properties as temperatures drop. Diesel oil, for example, may change colour and texture when chilled below 0 degrees Fahrenheit, turning white and solid to the point where it will not flow through the engine. The precipitation of dissolved waxes contained in the oil causes this alteration. Because gasoline lacks these waxes, it is less susceptible to cold temperatures than petroleum-based engine oils.

In the winter, pick a lightweight, winter-grade oil to minimise engine difficulties caused by thicker motor oil. In freezing temperatures, lighter oils flow more freely, whereas thicker oils may have difficulty moving through the engine and may even prevent the car from starting. The viscosity of the oil can be found on the bottle’s label. The letter W in the oil’s title indicates that it is ideal for winter driving.

Another option is to use synthetic oil, which has shown resistance to thickening in temperatures as low as -40 degrees Celsius, according to Mobil India, a motor oil company. On the other hand, as crude oil cools, it becomes thick and tar-like.

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