Liedtke moved to
Midland, Texas, then opened a
law practice with his brother,
William, in 1949. In the 1960s the Liedtke brothers acquired control of the South Penn Oil Company and merged it with Zapata to form a new company they called Pennzoil. In the 1980s, during his time as CEO of Pennzoil, he led the company to a court victory over
Texaco. ==Death==