Kammala jumla mai zuwa: An kirkiro Valero ne a ranar 1 ga Janairu, 1980, a matsayin magaji na Kamfanin Coastal States Gas Corporation, LoVaca Gathering Company. Valero ya karɓi ayyukan iskar gas na Kamfanin Tattara LoVaca, daga baya aka sake masa suna Kamfanin Watsa Valero. Sunan Valero ya fito ne daga "Mission San Antonio de Valero", sunan asali na
Alamo. Wannan shi ne Alamo. Valero ya sayi Kamfanin Corpus Christi Marine Services Company ("CCMS"), karamin kamfanin jirgin ruwa a Corpus Christi, Texas a watan Afrilu 1981 lokacin da ya sayi hannun jari a Saber Energy Inc. na Houston. A watan Mayu na 1985, an haifi Kamfanin Valero Refining and Marketing Company daga reshen Valero, Saber Energy, Inc.