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Consequently, if a liquid has dynamic viscosity of n centiPoise, and its density is not too different from that of water, then its kinematic viscosity is around n centiStokes. For gas, the dynamic viscosity is usually in the range of 10 to 20 microPascal-seconds, or 0.01 to 0.02 centiPoise. The density is usually on the order of 0.5 to 5 kg/m^3.
The SAE has a separate viscosity rating system for gear, axle, and manual transmission oils, SAE J306, which should not be confused with engine oil viscosity. The higher numbers of a gear oil (e.g., 75W-140) does not mean that it has higher viscosity than an engine oil 20W-50.
where U is the oil's kinematic viscosity at 40 °C (104 °F), Y is the oil's kinematic viscosity at 100 °C (212 °F), and L and H are the viscosities at 40 °C for two hypothetical oils of VI 0 and 100 respectively, having the same viscosity at 100 °C as the oil whose VI we are trying to determine.
The viscosity of a liquid can be thought of as its "thickness" or a measure of its resistance to flow. The viscosity must be high enough to maintain a lubricating film, but low enough that the oil can flow around the engine parts under all conditions. The viscosity index is a measure of how much the oil's viscosity changes as temperature ...
The fluid specification for Mercon-ULV (Ultra-Low Viscosity) was introduced on January 2, 2014. Mercon ULV is composed of a Group 3+ Base oil and additives needed for the proper operation of the 2017 and above Ford 10R80 and the GM 10L90 10-Speed rear wheel drive automatic transmission.
Ford, [2] GM, [3] and Chrysler [4] offer the following vehicles in the US that use E85 (different models are available outside the US, depending on the country). For 2018-2025, all Flex Fuel Vehicles available for sale are listed. E85 FlexFuel Chevrolet HHR LS 2009 (USA). E85 FlexFuel Chevrolet Impala LT 2009 (USA). U.S. E85 FlexFuel Chevrolet ...
Extensional viscosity can be measured with various rheometers that apply extensional stress. Volume viscosity can be measured with an acoustic rheometer. Apparent viscosity is a calculation derived from tests performed on drilling fluid used in oil or gas well development. These calculations and tests help engineers develop and maintain the ...
Crude oil is considered "heavy" if it has long hydrocarbon chains, or "light" if it has short hydrocarbon chains: an API gravity of 34 or higher is "light", between 31 and 33 is "medium", and 30 or below is "heavy". Crude is considered "sweet" if it is low in sulphur content (< 0.5%/weight), or "sour" if high (> 1.0%/weight). Generally, the ...
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related to: high viscosity vs low viscosity oil list of vehicles for sale texas real estate