Semi-Synthetic
Our semi-synthetic coolant, Viscool metal working fluids, and metalworking fluid additives are ideal for many different situations, including light, moderate, heavy duty, and hard water applications. Whatever you may need it for, Rock Valley Oil & Chemical Company has the semi-synthetic coolant you need.
Viscool 6425
A non-chlorinated economical metalworking coolant recommended for light to moderate duty applications, including hard water applications.
Viscool 6435
A non-chlorinated economical metalworking coolant for moderate to heavy duty applications, including hard water applications.
Viscool 6335
A semi-synthetic, non-chlorinated industrial coolant recommended for a broad range of applications and metals.