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To calculate viscosity index we need viscosity of an oil both at 40°C and 100°C. In the first row table 1, Enter kinematic viscosity (KV) at 40°C, In the same way enter kinematic viscosity @100°C in the second row. Click Calculate button to get viscosity index (VI).
Mixing Viscosities Calculator: To predict blend viscosity of two or more base oils or to predict mixing ratio of base oils to reach the desired viscosity. For best results, blend base fluids from a base stock slate or fluids from the same manufacturer.
Use Viscosity index calculator to calculate viscosity index from kinematic viscosities at 40 (68 cSt) and 100°C (8.8 cSt). Viscosity index=102. Calculator according to ASTM D341 for kinematic viscosity extrapolation. If you know the viscosity at two temperatures, it is possible to.
Mixing Viscosities Calculator: To predict blend viscosity of two or more base oils or to predict mixing ratio of base oils to reach the desired viscosity. For best results, blend base fluids from a base stock slate or fluids from the same manufacturer. See API Base Oil Interchangeability Guidelines.
Use only manufacturer recommended oil viscosity grades for your vehicles. The Society of Automotive Engineers (SAE) developed a scale for viscosity for both engine oil (SAE J300) and transmission oils (SAE J306). See SAE J300 viscosity table below.
Dynamic Viscosity: Enter Values and Click Calculate! Fill in the density and kinematic viscosity, and click the calculate button for dynamic viscosity calculation.
Find viscosity tables and charts for ISO VG. Contains 18 viscosity grades, viscosity classification for industrial lubricants. ISO 3448, DIN 51519
Apparent viscosity, determined by the ratio of shear stress to shear rate using Poiseuille’s equation and measured in poises as per ASTM D1092, is a nuanced property influenced by various factors in grease formulations.
AGMA classifications and their equivalent ISO viscosity grades (ISO VG) for gear oils. Please note that EP, R&O and compound (C) designations are no longer used. It is therefore necessary to check the owner’s manual for service grade requirements. Chart/table provided below for AGMA gear oils (lubricants) only.
In short, greases have mineral paraffinic base oils as a liquid lubricant. For high viscosity applications, it is a blend with bright stock. Similarly, manufacturers use naphthenic base oils to achieve better thickening by soaps and low-temperature fluidity. The soap contents are lowest with a naphthenic base oil that makes grease economical.