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Sae 30 Temperature Range. C Pumping Viscosity mPas. The W denotes a winter grade from the days when oils were only monograde oils. Technical data Viscosity at 40C cSt. In other words a SAE 30 motor oil is the same viscosity as a 10w-30 or 5W-30 at 210 100 C.
Temperature impacts the flow properties of engine oil. C Pumping Viscosity mPas. The lower the number the thinner the oil and the better the oils cold temperature. In a 5W-30 for example the number before the W describes the viscosity of the oil at low temperatures. Read to know more about the oil grades before taking a final decision on which to use on your lawnmower. 104 Viscosity at 100C cSt.
Easy start up at low temperature High safety potential at high temperature.
The W denotes a winter grade from the days when oils were only monograde oils. The difference is when the viscosity is tested at a much colder temperature. In a 5W-30 for example the number before the W describes the viscosity of the oil at low temperatures. The document SAE J300 defines the viscometrics related to these grades. 100 degree c measured so when your car is running at normal temperature the oil flows properly. Motor Oils - Dynamic Viscosity - Dynamic viscosities for motor oils SAE 10 to 50 - temperature range 0 - 100 deg C.