PetroChoice acquired Oklahoma City, Oklahoma-based lubricants distributor Commercial Distributing Inc.  Parkland Fuel Corp. acquired Salt Lake City, Utah-based Kellerstrass Oil Co., which distributes fuels and lubricants. Chevron Oronite announced that Barbara Smith, vice president of products and technology, will retire on April 1 after 31 years service, and appointed Koon Eng Goh vice president of products and technology in Richmond, California. The company also appointed Walt Szopiak as its vice president of manufacturing and supply effective Oct. 16 last year, replacing Curt Anderson, who was named vice president of manufacturing for Chevron Products Co.