<p>Non-dearomatized hydrocarbon fluids are provided which have ASTM D-86 boiling point ranges within 235°C to 400°C and a naphthenic content of 45-75 wt.%, and a normal paraffins content of 3-10 wt.%, the naphthenics containing polycyclic materials. The fluids are particularly useful solvents for printing inks, drilling fluids, metal working fluids and as silicone extenders.</p>
