<P> In 1969 , Sinclair was acquired by the Atlantic Richfield Company ( ARCO ) . Federal antitrust provisions required the new entity to divest itself of certain Sinclair assets , and as a result , the East Coast operations of Sinclair were sold to BP ( which has since purchased ARCO ) . After the acquisition by ARCO , the dinosaur was phased out , but at least one service station , in Winona , Minnesota , retained the original look through the 1980s . Many Sinclair stations in the Midwest continued to use the dinosaur logo along with ARCO 's `` diamond spark '' logo . At least some Sinclair stations partially retained the Sinclair brand for a time , using ARCO 's blue rectangular logo including the `` spark '' graphic , but with the word `` Sinclair '' substituted for ARCO . </P>
<P> In 1969 , Sinclair was acquired by the Atlantic Richfield Company ( ARCO ) . Federal antitrust provisions required the new entity to divest itself of certain Sinclair assets , and as a result , the East Coast operations of Sinclair were sold to BP ( which has since purchased ARCO ) . After the acquisition by ARCO , the dinosaur was phased out , but at least one service station , in Winona , Minnesota , retained the original look through the 1980s . Many Sinclair stations in the Midwest continued to use the dinosaur logo along with ARCO 's `` diamond spark '' logo . At least some Sinclair stations partially retained the Sinclair brand for a time , using ARCO 's blue rectangular logo including the `` spark '' graphic , but with the word `` Sinclair '' substituted for ARCO . </P>
when did sinclair oil go out of business
when did sinclair oil go out of business
1969
1969