The discussion centers on the comparison between VG 110 oil and 100cSt viscosity, specifically addressing whether VG 110 can be directly substituted for 100cSt oil. It is established that VG 110 is an unusual grade, with the nominal kinematic viscosity for ISO 3448 grades typically starting at 100 mm²/s. The dynamic viscosity is defined as the product of density and kinematic viscosity, expressed mathematically as μ = ρ ν. The conversation also highlights the need for specific gravity data to accurately determine dynamic viscosity.
PREREQUISITESEngineers, tribologists, and lubrication specialists seeking to understand oil viscosity classifications and their implications in tribology applications.
I believe VG110 would be an unusual grade. Typically, when referencing an ISO 3448 grade, the value for the nominal kinematic viscosity (in mm2/s) is given, so the minimum kinematic viscosity is 100 mm2/s. 1 cst = 1 mm2/sPatrick Jago said:Would I be right in thinking that VG 110 oil would be equal to 100cSt ... is it a straight swap or is there any formula. I'm trying to determine the dynamic viscosity