What is the crossword answer for the clue: Exxon competitor

ARCO - a 4 letter word may be the answer you are looking for!

HESS - a 4 letter word may be the answer you are looking for!

AMOCO - a 5 letter word may be the answer you are looking for!

CITGO - a 5 letter word may be the answer you are looking for!

Exxon competitor

4 Character Answers:

ARCO

HESS

5 Character Answers:

AMOCO

CITGO