Perkins Oil Company began operations in 1962 as a Pennzoil distributor. The firm is one of the largest distributors of Shell, Pennzoil, Quaker State and Citgo products in the United States. Based in Madison, Wis., it specializes in offering quality petroleum products. Perkins Oil Company offers a complete line of automotive and industrial chemicals, which include floor cleaners, brake clean and windshield wash, as well as complex compounds for specific industrial uses, such as hydrochloric acid and D-limonene. The firm also offers a complete line of car wash chemicals.