I suspect I know the answer to this, but hoping someone may know something I don't here.
Is there a way I can determine the specific heat capacity at constant pressure (Cp) of an oil if I know the density, temperature and viscosity?
The oil I am interested in: http://www.bakerprecision.com/neo/75w90rhd.htm
The company is only small and hasn't got a value of Cp as far as I can tell, I have contacted them. They are unlikely to have tested it in my experience of dealing with them.
As far as I know this could only be done by experimental correlation, and there is no universal equation.
Is there any theory you know that can estimate the value of Cp of an oil from basic properties without experimentation?
I know: Dentity, viscosity and surface tension at room temperature. Plus viscosity at various other temperatures.