[AMTRAK]500 P32-8WH Pepsi Can Bio Diesel Test Unit Leads PO90-15 With Loud 7FDL-12 & Hornshow

Twenty of these locomotives were delivered to Amtrak in 1991, numbered 500 through 519. They were nicknamed "Pepsi Cans" by many railfans, due to being delivered in a wide-striped red, white, and blue livery. They have since been repainted in more recent Amtrak liveries, mostly Phase IV and Phase V.

The Dash 8-32BWH has since been relegated to yard switching (mainly in Los Angeles, Oakland, Chicago, Miami, and the Auto Train terminals) and transfer service, displaced by the newer and more powerful GE Genesis, but the Dash 8s occasionally substitute for the Genesis units if necessary and the Los Angeles based units see frequent use on the Coast Starlight and Pacific Surfliner.

Two of the locomotives, 501 and 502, were sold to the California Department of Transportation. The locomotives were renumbered 2051 and 2052, and received the Amtrak California paint scheme. They are used on the San Joaquin and Capital Corridor trains.