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  2. SAE J300 - Wikipedia

    en.wikipedia.org/wiki/SAE_J300

    But SAE also allows designating an oil with two viscosity grades, referred to as a multi-grade oil. For example, 10W-30 designates a common multi-grade oil. A 10W-30 oil must pass the SAE J300 viscosity grade requirements for both 10W and 30, and all limitations placed on the viscosity grades, such as the requirement that a 10W oil must fail ...

  3. List of viscosities - Wikipedia

    en.wikipedia.org/wiki/List_of_viscosities

    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.

  4. Viscosity - Wikipedia

    en.wikipedia.org/wiki/Viscosity

    The SI unit of kinematic viscosity is square meter per second (m 2 /s), whereas the CGS unit for kinematic viscosity is the stokes (St, or cm 2 ·s −1 = 0.0001 m 2 ·s −1), named after Sir George Gabriel Stokes. [29] In U.S. usage, stoke is sometimes used as the singular form.

  5. Saybolt universal viscosity - Wikipedia

    en.wikipedia.org/wiki/Saybolt_universal_viscosity

    Saybolt universal viscosity (SUV), and the related Saybolt FUROL viscosity (SFV), are specific standardised tests producing measures of kinematic viscosity. FUROL is an acronym for fuel and road oil. [1] Saybolt universal viscosity is specified by the ASTM D2161. Both tests are considered obsolete to other measures of kinematic viscosity, but ...

  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. NLGI consistency number - Wikipedia

    en.wikipedia.org/wiki/NLGI_consistency_number

    The NLGI consistency number or NLGI grade expresses a measure of the relative hardness of a grease used for lubrication, as specified by the standard classification of lubricating grease established by the National Lubricating Grease Institute (NLGI).

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  9. List of ISO standards 3000–4999 - Wikipedia

    en.wikipedia.org/wiki/List_of_ISO_standards_3000...

    ISO 3104:2020 Petroleum products — Transparent and opaque liquids — Determination of kinematic viscosity and calculation of dynamic viscosity; ISO 3105:1994 Glass capillary kinematic viscometers – Specifications and operating instructions; ISO 3106:1974 Dental zinc oxide/eugenol filling materials [Withdrawn: replaced with ISO 3107]