He was a public official in the Fuse City government from 1964 to 1966, and directed the merger to form Higashi-Osaka in 1966.

Although Shiokawa became Secretary-General of the LDP in 1995, he lost his seat in the 1996 general elections, and was not re-elected until 2000.

In 2001, Junichiro Koizumi tapped Shiokawa to serve as Minister of Finance.

[2][3] Shiokawa was dean of Toyo University, director of the Kansai Shogi Hall, and active within the Japan Sumo Association.

Shiokawa died on September 20, 2015, of pneumonia in Osaka, Japan at the age of 93.