Rock Oil Refining Inc. built its initial oil recycling facility in 1986 utilizing state of the art oil processing technology.  In recent years as recycling efforts expanded Rock Oil developed processes for recycling antifreeze, used oil filters, coolant and contaminated water. Our facilities have grown as our customers recycling needs have grown. The primary concerns in development, construction and operation of our facility is to provide protection to the surrounding environment, to facilitate safe efficient processing of used oil and related waste products and to produce quality marketable renewed products, all within the scope of current regulations.