![]() ![]() Multigrade can work effectively in all seasons and at a variety of temperatures, making them more popular and convenient.Īn example of a multigrade oil would be 10W40. Multigrade oils are similar to Monograde oils but with one major key difference. In a warmer climate an oil with a high viscosity that is not marked W is recommended such as SAE 16 in order to protect the engine at higher temperatures. In the winter an oil marked W (winter) needs to be used as the lower viscosity of this oil circulates the engine better in winter months.ģ0 = How thick the oil is at the engine’s normal operating temperature. Monograde oils are suitable for older engines and are used at a lower temperature. Viscosity is how resistant the oil is flowing around the engine, the lower the viscosity the easier it is for the oil to flow. Oil is graded with a combination of letters and numbers by The Society of Automotive Engineers (SAE), based on the viscosity of the oil. It is suitable for light-duty and older model vehicles with a less complex engine and average mileage. ![]() It is categorised into different grades based on viscosity and quality.
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