ARCO takes raw crude from overseas and offshore and turns it into petrol (as well as manyother petroleum products). Some of this petrol is sold retail. Some if it is sold wholesale to other petrol companies.
If you ever find yourself in a sushi restaurant in Rosemont, CA, facing an intersection with four different brands of gasoline being sold at each corner for four different prices... it is mildly amusing when the same ARCO tanker stops at each one in turn to deliver gas.
Gasoline delivery is a pretty infrequent occurance, but the only brand of gasoline that I ever saw consistently delivered in same-branded tankers was British Petroleum. Otherwise it was almost always the (or one of the) big local producers/distributors (Heiss, Amoco, ARCO, etc.).
My theory? It's cheaper because of vertical integration... there's no middle-men marking it up for ARCO stations.
__________________
Simple Machines in Higher Dimensions
|