comparative study of heat transfer to viscoelastic fluids and water in a shell-and-tube heat exchang

hello, I am student of M.tech.
I want some information about viscoelastic fluid for my project work.
Q.1- Is oil a viscoelastic fluid?
Q.2- Give me information about the other types of viscoelastic fluid which is easily available in the market in cheapest price for my project work?