Not to be confused with AAMCO Transmissions.
Amoco (first era)
This logo was used for stations on the US East Coast until 1961 when Amoco changed its name to American Oil.
While the torch and oval did make its debut in 1947, the "Amoco" name didn't appear on the logo until 1956, when they took over the Pan-Am stations in the South. This logo was only used in the former Pan-Am territory.
During much of the 60', the "American" name appeared on the original torch and oval logo as well as the current version in use at the time.
Amoco (second era)
Amoco merged with BP in 1998. In 2002, the last Amoco stations opened, and by 2008, all of Amoco's stations were integrated into BP.
In October 2017, BP announced they would revive the Amoco brand in select US markets.