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2. Motor oil - Wikipedia

   en.wikipedia.org/wiki/Motor_oil

   In the mid-1970s, synthetic motor oils were formulated and commercially applied for the first time in automotive applications. The same SAE system for designating motor oil viscosity also applies to synthetic oils. Synthetic oils are derived from either Group III, Group IV, or some Group V bases.

3. SAE J300 - Wikipedia

   en.wikipedia.org/wiki/SAE_J300

   The grades with a W designation are considered Winter-grades, and denote an engine oil's low-temperature properties, while non-winter grades denote an engine oil's properties at the operating temperature of an engine. [5] The SAE 8 through SAE 16 viscosity grades describe oils that can improve fuel economy through reduced hydrodynamic friction ...

4. Synthetic oil - Wikipedia

   en.wikipedia.org/wiki/Synthetic_oil

   A sample of synthetic motor oil. ... PAG oils of different viscosity grades (usually either ISO VG 46 or ISO VG 100) ...

5. Shell Rotella - Wikipedia

   en.wikipedia.org/wiki/Shell_Rotella

   Multigrade synthetic oil—in SAE 5W-40 and 15w-40 viscosity ranges [3] Single grade conventional oil—in SAE 20, 30, 40 and 50; Synthetic blend oil; Shell is marketing their new CJ-4/SM oil as "Triple Protection," meaning it provides enhanced qualities for engine wear, soot control and engine cleanliness.

6. Viscosity index - Wikipedia

   en.wikipedia.org/wiki/Viscosity_index

   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.

7. Viscosity - Wikipedia

   en.wikipedia.org/wiki/Viscosity

   Viscosity is a measure of a fluid's rate-dependent resistance to a change in shape or to movement of its ... SAE 10 Motor oil: 0.085 to 0.14 Castor oil: 0.1 SAE 20 ...